Energy usage was measured using the watts up? standard power meter from Electronic Educational Devices INC http://www.doubleed.com The accuracy is listed as a fraction of the measured value: +/-3% +/-2 digits for loads >10W and +/-5% +/-3 digits for loads <10W.
NOTE: This meter appears to be quite inaccurate for <10W loads such as switching power supplies. Ie I'll get a reading of 0W; but if I plug in another load that is about 4W and then add the one I'm trying to measure it registers 6W.As of 2007 I started using a UPM EM100 Energy Meter and it seems to be much more accurate at lower power levels.
Power Measurement with Hydro Meter An excellent way to measure the power use of some things, and find vampires is to just
use the hydro meter on your house. You need to time how long it takes to do a full, or partial, revolution of the dial.
P = (3600 * dial revolutions * Kh) / revolution_time_seconds
Kh will be indicated on the meter. For low power measurements I typically count how long it takes to do 0.1 or 0.2 of a revolution
as that'll be 3 minutes! Note that the meter does become inaccurate at about 15W and less. For low power my meter doesn't seem
to turn at all.
I've used the hydro meter to measure the power use of things like the furnace fan, oven and to verify the impact of my 3 biggest vampires (microwave oven, central vacume transformer, power bar for computer and it's extras).
Note - I've seen a brand name P4 computer draw <80W while all other P4's I've seen are >100W. That implies that the efficiency of the power supply is a lot better. From web sites (Wikipedia) efficiency is typically 75%, peaks at about 1/2 the power rating and can be as high as the low 90's.
There are articles on changing the 3-wire P4 fans to run at various speeds. The trick is to run them not on the 12V, but to use 5V or 7V (diff between 5V and 12V). Note that if 7V is used - the ground reference is gone and the BIOS will not be able to measure the fan speed.
To control the speed for some of the measurements, a resistor was put in
series with the 12V supply (1W 10%). Here is a comparison:
| Voltage | Speed | Resistance | Temp CPU, chassis |
|---|---|---|---|
| 12V (stock) | 2650 rpm | 49 / 36C 40/24C at startup | |
| 7V | ?? rpm | ||
| 5V | 1850 rpm | 59 / 38C | |
| 12V | 1600 rpm | 34 ohm | 55 / 41C |
| 12V | 1760 rpm | 25 ohm | 54 / 42C |
| 12V | 1875 rpm | 20 ohm | 53 / 41C |
| 12V | 1900 rpm | 20 ohm | 38 / 37C |
Many of my Pentium III computers are quite noisy and so I experimented with adding a resistor in series with the 12V line to slow down the fan. I tried resistors from 40 ohms up and was not happy with the noise reduction till I hit 160 ohms.
| Resistance | Fan Speed rpm | Temperature MB, CPU |
|---|---|---|
| 200 ohm | 2020 | 24, 37 (warming up) |
| 27, 43.5 (warming up) | ||
| 28, 44.5 (steady state) | ||
| 0 ohm | 4000 | 28, 40.5 |
I've seen a lot of confusing numbers from computer systems - Dell and IBM computers drawing around 60W compared to 100W for other P4 computers. I initially assumed that this was due to differences in power supply efficiency - but this wasn't testable (non-standard power supplies).
So when I did get some computers for which I could swap the power suplies (and had low power use) I verified that it wasn't 80Plus efficient power supplies which caused the lower power use, but that it was the CPU.
| Sept 2008 Intel P4 Power Use Comparison (AOpen Micro P4 case) | |||
|---|---|---|---|
| Computer | In BIOS | In Linux/Win XP | Quartus II 7.0 Compile Time |
| Celeron D P4 2.4GHz (1G) | 105W | 83W | 44 sec |
| P4 2.4GHz (1G) | 84W | 63W | 50 sec |
| Celeron P4 1.5GHz (1G) | 100W | 64W | 72 sec (1:12) |
| P3 1.2GHz (512M) | W | aprox 60W | aprox 105 sec (1:45) |
Modern PCI-Ex video cards seem to draw 20W more than old PCI video cards (inefficient power supply).
80Plus power supplies such as the Antec EarthWatts and, at least, 2007 vintage Antec TruPower Tri power supplies offer 20% to 25% reduction in power use when the computer is on. On computers which are on 24x7 this means a payback on upgrading is just over a year at $0.10/kWh.
Intel Core 2 Duo microprocessors are power hogs. AMD Athlon 64 and 64x2 microprocessors use signif. less power at the same level of performance. Typical AMD systems I have use 60W under normal use; while Intel Core processors are around 120W - assuming inefficient power supplies.
Proper choice of computer motherboards can make a signif. difference. I've measured fancy "Delux" motherboards with WIFI which draw 20W more than other motherboards and this is signif. if one is aiming for a sub 60W power draw (which is easily achieved).
| April 2010 Antec 80Plus vs 80Plus Bronze Earthwatts 380 Asus P4P800VM MB, 2G, 2.4GHz Celeron D, no HD in BIOS | ||||
|---|---|---|---|---|
| Power Supply | Power In BIOS (% reduction) | Standby | ||
| AOpen FSP-200 (200W) | 107W | 3W | ||
| Antec 80Plus Earthwatts 380 | 81W (-24%) | 4W | ||
| Antec 80Plus Bronze Earthwatts 380 | 76W (-30%) | 4W | ||
| April 2010 P3 vs P4 Computer Comparison | ||||
|---|---|---|---|---|
| Antec 80Plus 350W P/S, 1 PATA HD | ||||
| Computer | In BIOS | In Win XP | ||
| P3 1.2GHz,768M Asus TUV4x | 40W | 44W | ||
| P3 1.3GHz,1G AOpen MX36LE-UN | 37W | 39W | ||
| P4 2.4GHz Celeron D,1G Asus P4P800-VM | 84W | 50W | ||
| P4 2.4GHz P4,1G Asus P4P800-VM | 67W | 39W | ||
| AOpen non-80Plus 350W P/S, 1 PATA HD | ||||
| P4 2.4GHz Celeron D,1G Asus P4P800-VM | 100W | 71W | ||
| P4 2.4GHz P4,1G Asus P4P800-VM | 82W | 55W | ||
| April 2008 Computer Power Supply Comparison | |||||
|---|---|---|---|---|---|
| Computer | Power Supply | Off (switch) | Standby | In BIOS | In Linux/Win |
| P4 2.8GHz, 512M DDR, 30G PATA HD, 8 x 200G SATA, 3Ware Esclade 8000 RAID Asus P4P-800VM MB, NVidia, Intel Nic, no floppy | Antec Antec EarthWatts 380W | W | 5.5W | 171W | 139W |
| AOpen FSP550-60 | W | 15W | 212W | 170W Centos 5 Linux | |
| P4 2.4GHz, 512M DDR, 30G PATA HD MB845AD MB, NVidia GeForce MX2 400, Intel Nic (2W less with ATI Rage128 video) | Antec Antec EarthWatts 380W | W | 6W | 69W | 49W Win XP |
| DTK PTP-2518 250W | W | 8W | 83W | 59W | |
| PowerMan FSP250 | W | 5.5W | 87W | 62W | |
| AOpen FSP200-60SAV | W | 7W | 90W | 65W | |
| AOpen FSP250-60 | W | 5.5W | 92W | 66W | |
| P4 2.4GHz, 512M, 40G PATA HD, MB845AD MB, NVidia, Intel Nic | Antec Antec EarthWatts 380W | 0W | 6W | 71W | 52W |
| PowerMan FSP250 | 0W | 5W | 97W (0.81A) | 64W WinXP (122W max) | |
| Core 2 Duo 2.4GHz E6600 Asus P5BPRE motherboard 4 of 500G Sata II HDs, DVD Burner, 3 case fans | Antec TruPower Trio 650W or Antec EarthWatts 380W | 4W | 11W | 131W, 1.16A | 117W 1.02A |
| Core 2 Duo 2.4GHz E6600 Asus P5BPRE motherboard 500G Sata II HD, DVD Burner | Antec TruPower Trio 650W | 4W | 11W | 90W | 75W, 80W HD active, 113W peak (Nov 2010) |
| P3 1.3GHz Celron, 80G HD | Antec EarthWatts 380W | 0W | 4W (4W MB NC) | 36W | 72W linux |
| AOpen FSP250 | - | 4W (4W MB NC) | 52W | 53W | |
| AMD Athlon 64 Asus 3800 CPU M2NPV-VM 2.4GHz, 80G HD | Antec EarthWatts 380W | 0W | 5W | 65W | 43W |
| AOpen FSP300 | - | 7W (4W MB not connected) | 85W | 56W | |
| AMD Athlon 64 Asus M2NMX SE Plus 2.4GHz LE1620 CPU, 80G HD | Antec EarthWatts 380W | 0W | 6W | 66W | 40W |
| AOpen FSP300 | - | 7W | 82W | 52W | |
| Asus P5B Delux, Intel Core 2 Duo 6600 2.4GHz Asus A260FM PCI-Ex video, 3 x 160G Sata HD, DVD burner | Antec EarthWatts 380W | 4W | 7W (65mA) | 122W, 1.08A | 103W, 0.88A |
| AOpen Z400 | - | 10W, 90mA | 146W 1.24AW | 128W, 1.09A | |
| Antec EarthWatts with PCI video card | - | - | 116W 1.00A | 94W, 0.83A | |
| Asus P5B Delux, Intel Core 2 Duo 6600 2.4GHz ATI PCI video, 30G PATA HD | Antec TruPower Trio | 9W | 100W, 0.87A | 78W (Centos 5.0) | |
| Oct 2007 Computer Power Comparison (P3-1.2GHz AOpen M/B, 60G HD, floppy | |||
|---|---|---|---|
| Power Supply | Off (switch) | Standby | In BIOS |
| P3 era AOpen FSP-250 250W (2001 vintage) | 0W 0A | 4W 0.04A | 66W 0.55A |
| Antec SmartPower SP-400 400W (2006 vintage) | 3W 0.03A | 11W 0.10A | 63W 0.54A |
| P4 era "Silencer 275W" (2001 vintage) | NA | 6.5W 0.055A | 63W 0.53A |
| AOpen FSP200 (200W micro) (2004 vintage) | NA | 6W 0.05A | 61W 0.51A |
| AOpen FSP300-60SV (300W micro) (2007 vintage) | NA | 4W 0.045A | 61W 0.52A |
| P2 era DTK PTP-2518 250W (2000 vintage) | 0W 0A | 6W 0.05A | 58W 0.48A |
| Item | Power draw | |
|---|---|---|
| Electronic Test Equipment | ||
| Genrad RLC Digibridge 1657 | 0W off, 17W on (May 2012) | |
| Keithley 196 DMM | 0W off, 15W on (May 2012) | |
| Hameg DMM HM 8011-3 (attaches to 'scope) | 0W off, 3.5W on (May 2012) | |
| Boonton 7200 Capacitance Meter() | 0W off, 19W on (May 2012) | |
| Tektronics 2221A 100MHz Storage Oscilloscope | 0W off, 70W on (May 2012) | |
| Philips PM 3200 10MHz Oscilloscope (1970's vintage?) | 0W off, 18W on (May 2012) | |
| Hameg HM605 Oscilloscope (1985 vintage) | 0W off, 35W on (Apr 2012) | |
| HP 1725A 275MHz Oscilloscope | 0W off, 76W on (Apr 2012) | |
| Tektronix 2245A 100MHz Oscilloscope | 0W off, 80W on (Apr 2012) | |
| GW GFG-8016G Function Generator | 0W off, 8W on (Apr 2012) | |
| GW GFG-813 Function Generator | 0W off, 20W on (Apr 2012) | |
| Interstate F30 Function Generator | 0W off, 14W on (Apr 2012) | |
| Kenwood AG203 Function Generator | 0W off, 2W on (Apr 2012) | |
| Agilent DSO-X 2002A 70MHz Oscilloscope | 7W off, 25/43W on (cycles slowly between 25 and 43W (Apr 2012) | |
| Agilent 33120A 15MHz Arbitrary Generator | 0W off, 24W on (Apr 2012) | |
| Agilent N9310A RF Signal Gen. 3GHz | 7W off, 61W on (Apr 2012) | |
| Agilent E5062A ENA 3GHz Windows 2000 based | 10W off, 100W on (Apr 2012) | |
| Tektronics DMM4020 5.5 digit DVM | 4W off, 4W on (Apr 2012) | |
| Leader LFG 1300S Function Generator | 0W off, 11W on (Apr 2012) | |
| Hitachi VC-6023 Digital Storage 'scope | 0W off, 39W on (Apr 2012) | |
| Nash and Harrison 3501A digital multimeter (nixie tube, 1970's vintage?) | 0W off, 10W on (Apr 2012) | |
| HP 3575A Gain Phase Meter 13MHz (1980's vintage?) | 0W off, 30W on (Apr 2012) | |
| Perrier Serial EPROM programmer (1980's vintage?) | 0W off, 9W on (Apr 2012) | |
| Motorola MC 68000 Educational Computer 1981 | 0W off, 101W on (Apr 2012) | |
| Plessey Microsystems PME68k 68-1B Educational Computer 1982 | 0W off, 35W on (Apr 2012) | |
| 16 of 5307 single board Coldfire computers on AT power supply | 49W | |
| 20 of 5307 single board Coldfire computers on AT power supply | 62W | |
| Linear power supply (orange case) 16W with of 1 of 5307 Coldfire computer, 9W no load | ||
| Linear power supply (blue case) 16W with 2 Coldfire computers, 11W with of 1 of 5307 Coldfire computer, 7W no load | ||
| Switching power supply 11W with 2 Coldfire computers, 6W of 1 of 5307 Coldfire computer, < 1W no load | ||
| Appliances | ||
| Excalibur 9-tray Dehydrator | 38W fan only, 645W max, 410W over 13 hours at 57C ambient 20C | |
| Frigidaire GFGI13P3KS induction element | 4W to 12W off (avg 10W?), 1150W full power (Feb 2010) | |
| Iwatani 1500 induction element | 9W to 14W off, 1450W full power (Nov 2011) | |
| BergHOFF EarthCheff induction element | 38W off!!, 1450W full power (Two units tested, Nov 2011) | |
| Kenmore water distiller - distil 1 gallon | 3.2kWh in 6.5h (July 2011) | |
| Boiling Kettle 7c, 1.75L from aprox 15C to boil | 11.7A 1350W 0.14kWh in 6 min 12 sec | |
| Bake bread 375F (heat oven bake for 40 min) | 1.5kWh over 55 min (using hydro meter) | |
| Bread Maker Proctor Silex | 3W and 30mA standby, 100W kneeding, baking time 4:07 0.37kWh, 483W max, 3.97A max, aprox 2lb loaf of bread (just kneed bread takes 0.07kWh over about 2 hour 50 min.) Note that the elec use is equivalent to baking 4 loaves in a full oven. | |
| U of Waterloo hot/cold water blower fan (capacitor split motor??) | LOW 1.48A, MEDium 1.58A, HIGH 1.91A (3A induction) | |
| Large Home Appliances | ||
| HRV (VanEE Venmar model 1001) Heat Recovery Ventilator | rated 147W 1.4A, low and high speed, runs 20 min per hour in winter | |
| GSW Spacesaver 12Gal, 40L, 1500W SS12SEB water heater set at 49C, 1" fiberglas insul (Dec 2006) in a cabinet at 33.1C ambient 23.1C | standby losses 1.67kWh in 2.70 days = 0.62 kWh/day or aprox $25/yr, 1.0kWh/day with occasional use | |
| GSW Spacesaver 19Gal, 65L, 1500W SS19SEB water heater set at 49C, 1" foam + 1.5" fiberglass insul (Aug 2007) ambient 22C | standby losses 1.9kWh in 3.71 days = 0.52 kWh/day or 22W average, +1.0kWh/day heating water for a family of 4 | |
| Hot water circulator (continously circulate hot water thru all pipes!) | aprox 700W | |
| York Furnace (2006 York GY9 92% eff. gas) | 0.11A 13W, 785W average when running fan in low speed for heating, 7.72A estimated 750W, 1.4kWpeak igniting (1150W -> 1450W fan speed changed from low to high) Fan Only 650W low speed and 805W med-low speed (measured with power meter) | |
| Furnace Furnace (1990 Lennox G8 low eff. gas) | 0.14A 17W, fan on 383W 4.55A, 432Wpeak (with power meter) | |
| Furnace Fan (Lennox G8 low eff. gas) | 325W via home electrical meter (230 hours heating Sept 2005 -> June 2006 winter) | |
| "Star" S11FS32DR6 water softener transformer | 6W, 55mA (AC xformer) | |
| Basement dehumidifier (summer use) | 240W running, 121Wh in 9 hours, 400Wh in 33 hours 471wH IN 23.5H = 20Wavg July 2006 (hot but not exceedingly humid) | |
| Fans | ||
| Broan ATRE070C exhaust fan | 29W, 0.8 sones, 0.23A draw, rated 0.3A & 70cfm | |
| Suncourt DB204 4" duct fan | 26W, aprox 2.5 sones, rated 0.25A & 80cfm, 5" rated 225 cfm 0.35A | |
| Nutone bath fan (1990 vintage) | 71W, rated 100cfm, 0.7A, 1/91hp, 4 sones | |
| room Fan 12" | 24W, 26W, 34W for 3 speed settings | |
| Clocks, Radios, Phones, Answering Machine | ||
| Cosmo Clock Radio (1980's vintage) | 2.5W | |
| ProSonic PCR279 Clock Radio (1980's vintage) | 3W | |
| Clock Radio (1980's vintage) | 2W, 30mA (3W radio on) | |
| 900 MHz Cordless Phone | 4W DC transformer or 3W, ??mA switching wall wart | |
| VTec 5.8GHz Cordless Phone March 2009 | 2W, 20mA DC transformer | |
| 1980's vintage dual regular C60 tape phone answering Machine | 7W, 60mA typical, 14W peak, 5W transformer not plugged into unit | |
| 1980's vintage microcassette phone answering Machine | 5W tape running, 3W standby | |
| 1980's vintage microcassette phone answering Machine | 2.75W, 27mA with electronic (switching PS) 9V wall wart standby | |
| 2005 GE Digital Message System all digial phone answering Machine | 3W running, 3W standby | |
| Small Electronics | ||
| Intermatic Time-All TN111 mechanical timer | 3W | |
| Sunbean 12" x 16" heating pad | 47W, 48W, 50W, 51W on 4 power settings rated 50W | |
| Computer Accessories (Scanner, Printer) | ||
| HP S20 slide/negative/print scanner | 3.5W standby | |
| Raven PR-9102 dot matrix printer | 0W off, 13W on, ?W running (Apr 2012) | |
| Roland DXY-1200 X-Y plotter | 7W off, 13W on (Apr 2012) | |
| HP Deskjet 842C Printer | < 1W off or standby | |
| HP Deskjet 930C Printer, mfg Nov 2000 | < 2W off or standby | |
| HP Deskjet 970Cse Printer, mfg Dec 1999 | < 0W off or standby | |
| Tektronix Phaser 340 wax printer | 13W power switch off, stayed at 900W to 920W saying it didn't have wax but with wax in all trays and the room smelling of wax (March 2011) | |
| HP LaserJet 4000 dtn laser printer | 680W peak, 450W printing, 25W (0.20A) "Ready", 22W "Powersave On", (July 2009) | |
| HP LaserJet 2430 dtn laser printer | 15W Sleep Mode, (July 2009) | |
| Lexmark E250d laser printer | aprox 400W running, 14W (0.12A) standby, 0W off (March 2009) | |
| Television and TV Amps | ||
| 14" Color TV (1988) | 45W | |
| 27" Color TV (1993) | 5W off 62W dark screen 79W normal 96W bad reception 110W typical 122W full white screen | |
| 23" ViewSonic VT2300LED 1080p LED TV (2011) | 0W off 35W typical, 30W at lower brightness, Viewsonic claims <50W max <1W standby, July 2011 | |
| 41" Vizio 1080P TV | ~1W standby (alternating 0W, 2W), 1.75A, 203W blue screen without audio - June 2011 | |
| TV antenna amp (1993) | 2W (20C or 43C) | |
| Stereo and Entertainment Equipment | ||
| Yamaha P80 Keyboard | 4W 40mA off, 7W on, Wall Wart PA-3B rated 12V 700mA 15VA (Jan 2010) | |
| 1980's vintage Teac V900 cassette deck | 24w on, 29W playing tape, 0W off | |
| Philips DCM278 Stereo (July 2010) | 9W typical, "0W" in standby or "off" | |
| Denonet GP-K780 dual tape Karoki machine (1990's vintage) | 0W off, 13W on, 17W max volume | |
| Venturer Boom Box (1990's vintage) | 3W cassette, 6W CD, 4W radio, NO OFF SWITCH | |
| Panasonic SA-PM22 portable stereo (radio,CD and tape player) | 19W On playing CD 0W Off | |
| Home stereo (amp, receiver) | 22.5W On 27W CD player playing 0W Off | |
| MagnaSonic top-loading DVD Player | 3W typical, 5W peak 1W in standby, 0W off | |
| VCR | 3W ??mA when Off 13W On 18W playing | |
| Modems and Network Equipment | ||
| 2-Wire DSL modem 2701HG-G | 7W (Oct 2008) | |
| CentreCom 8 port 10Mbit hub | 5W (3W with DC transformer not plugged into hub) | |
| DLink DI-604 4 port broadband router | 8W - May 2011 | |
| DLink DE-809TP 9 port 10Mbit hub | 5W (4W with DC transformer not plugged into hub) | |
| DLink 16 port 10Mbit hub | 1W | |
| 24 port 10Mbit hub | 8W | |
| CenterCom 3024SL, 10 Mbit, 25 port network hub | 11W (2 ports in use) | |
| CenterCom (Allied Telesyn) 100 Mbit input and 24 x 10Mbit out, network switch | 20W (no ports in use) | |
| SMC Tigerstack 100 5324TX, fast (100Mbit?) 24 port stackable hub | 110W (no ports in use) | |
| FS708 8 port 10/100 network switch | 24W | |
| SMC Tigerstack 5324TX 24 port network hub-switch | 99W | |
| Baystack 350 (T-HD) network switch | 52W (no module slots) | |
| HP Procurve 2626 switch (24 ports 10/100, 2 ports Gbit) | 34W booting, 37W GBit ports connected | |
| HP Procurve 2848 switch (48 ports 10/100/1000) | 70W booting, 75W 4-GBit ports connected | |
| HP Procurve 2650 switch | 44W booting, 41W no ports connected, 52W all ports in light use | |
| Cisco Catalyst 2900XL switch, 24 + 2x4 ports | 88W booting, 86W no ports in use | |
| Cisco Catalyst 3500XL switch, 8 EMPTY ports | 59W all ports empty | |
| extreme summit 48, 48 ports, no MDAs | 129W booting, 127W no ports connected | |
| Nortel/Bay 450 switch, cascade module, SX Gbit module | 57W booting, 64W no ports in use, 68W all ports in light use | |
| Nortel/Bay 450 network switch | 49W with cascade module, 54W adding Gbit SX module | |
| PC Computer Equipment | ||
| Laptop Computer Equipment | ||
| Dell PA-1650-05D2 laptop charger (19.5V 3.34A) | cycles between 0W and 2W standby, est 0.5W average draw | |
| IBM aprox 1998 Thinkpad laptop charger | 2.25W 30mA standby, 3W plugged into charged computer (2W without a battery in the laptop), 28W computer booting, 19 to 22W computer being used | |
| Hp Mini Netbook (9" screen, 19V 1.6A adapter) | 2W "off", 13W running, 16W max | |
| AST Bravo 4/25 Laptop, Win 95, 640k, no battery | 2W "off", 16W booting or running | |
| Apple and Sun Microsystems Computer Equipment | ||
| Apple 400MHz G4 1G ram computer | 90W typical, 115W max, 2W off | |
| Apple 450MHz G4 20G HD, 640M ram computer | 45W typical, 60W booting, 6W sleeping, 3W off | |
| 333MHz Sun Ultra 10 computer | 100W typical (1.5A), 130W max | |
| Sun Sparc XTerm1 computer | 15W | |
| Tatung (Sun) Ultrasparc computer | 148W, 2W standby | |
| Sun Ultra 80 PGX32 computer | 308, 11W standby | |
| Sun Ultra 80 computer | 260W | |
| Sun SparcStation 10 computer, 50MHz CPU, 96M RAM, 1G HD | 80W typical | |
| Sun SparcStation LX computer, 50MHz CPU, 48M RAM, 400M HD | 42W typical, 60W peak | |
| Sun 250 (2 processor 400MHz) computer | 113W, est 175VA with 4 harddrives | |
| Sun 250 (2 processor 400MHz), 1G, computer | aprox 300VA, with 4 harddrives | |
| Sun 450 (4 processor 400MHz), 4G, computer | aprox 450VA, with 4 harddrives | |
| Sun 4500 (4 processors, 400MHz) computer | 434W (3.65A), 545W (4.6A) diagnostics during booting | |
| Sun 4500 (12 processors, 400MHz, 8G, running, external HD) computer | 1,100VA | |
| Sun 4500 (400MHz, 8G, no HD, base power draw) computer | 65W standby, 670W 12 CPU 610W 10 CPU 550W 8 CPU (Nov 2010) | |
| Sun StoreEdge Array (empty 22 slot) | 156W typical | |
| Sun StoreEdge Array (empty 14 slot) | 149W typical | |
| Sun StoreEdge Array, 14 x 36G 10krpm HDs | 210W booting, 412W peak, settles at 365W 3.33A when not in use (315W with 3 HDs pulled) | |
| Solid Data e100 2G sold state harddrive (has backup battery, 36G HD) | 100W booting, 81W running (nicad being charged??) | |
| 36G IBM FCAL Drive for StoreEdge | 12W each | |
| CRT Monitors | ||
| 21" Sun color monitor | 90W, 60W dark, 112W white, <1W power saving | |
| 19" TTX "1995A" monitor | 78W typical, 50W black, 7W 60mA power saving, 6W when off!! | |
| 19" Viewsonic PF790 monitor | 100W typical, 107W white, 84W black, 1W power saving | |
| 19" Dell Trinitron Ultrascan P991 monitor | 96 to 120W, 6W in "low power mode", 5W when switched off | |
| 17" Sony Trinitron CPD-E400 1999 monitor | 90W typically, 7W in "low power mode", 3W when switched off | |
| 17" ADI Trinitron 937G 1997 monitor | 105W typically, 8W in "low power mode", 2W when switched off (high power draw due to Trinitron tube with 3 guns) | |
| 17" 7278c Acer 1998 monitor | 65W VGA 82W typical 1280x1024, 3W in "low power mode", 2W when switched off | |
| 17" TTX 7765E 1998 monitor | 50W VGA 72W typical 1280x1024, 65W (0.83A draw) BIOS, 4W in "low power mode", 0W when switched off | |
| 17" TTX 7792SC monitor | 72W typical 1280x1024 screen | |
| 17" Tatung monitor | 62W in BIOS 65W est. 1280x1024, 5W low power mode, 2W when "off" | |
| 14" Aamazing CM8484E II color monitor (1992 vintage) | 47W black, 54W VGA | |
| To Be Sorted | ||
| Altera DE2 FPGA Development Board | 1.5W with electronic 9V wall wart when on and < 1W when off | |
| Electronic DC wall warts (Kodak camera model, Altera model for DE2 board) | < 1W when no load connected | |
| Electronic DC wall warts (2001 vintage Altera model 9V, 600mA) | < 1W WITH 6 on a power bar - no load connected | |
| Transformer-rectifier DC wall wart 9V, 1A, 18W rating | 6W when no load connected | |
| Transformer-rectifier DC wall wart 6V, 0.5A, 7.5W rating | 1.5W when no load connected | |
| Doorbell transformer | 0.02A (2W assumed) | |
| PowerTrax 2000 power bar with LED display | 10W when on!! Mar. 2010 | |
| Hip Street FM transmitter MP3 player (2009) | aprox 1.5W, (9V 0.5A wall wart at 4W when off, 5.5W when plugged in) | |
| generic round Food Dehydrator | 250W | |
| PicStart Plus | 2W - may 2011 | |
| Craftsman 16.8V fast charger NiCd (18.0V 2.2A rating) | 7W standby! | |
| AOpen H340 case chassis fan | +3W for chassis fan labeled DC 12V 0.12A (aprox 1.5W) | |
| Vantec eSATA HD Dock NexStor | 3.5W when off or standby, 20W in use (June 2009) | |
| AMD Athlon XP "3200+", PATA HD, 512M ram, Asus A7V600-X MB | 136W BIOS | |
| 2.2 GHz AMD Athlon "3500" 64 dual-core, 160G SATA HD, 2G ram, AOpen FSP-300 (low eff) PS, M2PV-VM MB | 7W when off, 87W BIOS, 56W Win or Linux idle - Nov 2010 | |
| 2.2 GHz AMD Athlon "3500" 64 dual-core, 160G SATA HD, 2G ram, Antec EarthWatts EA380 (high eff) PS, M2PV-VM MB | 6W when off, 64W BIOS, 45W Win or Linux idle - Nov 2010 | |
| 2.8 GHz AMD Athlon 64 LE1660 single-core, 160G SATA HD, 4G ram, Antec MT-350 80Plus PS, M3A78-CM MB | 5W when off, 71W BIOS, 49W Linux idle - Aug 2009 | |
| 2.5 GHz AMD Athlon 64x2 6850e dual-core, 160G SATA HD, 4G ram, Antec MT-350 80Plus PS, M3A78-CM MB | 5W when off, 66.5W BIOS, 51W Linux idle - Aug 2009 | |
| 3.1 GHz AMD Phenom II "550" dual-core, 160G SATA HD, 4G ram, Antec MT-350 80Plus PS, M3A78-CM MB | 5W when off, 85W BIOS, 76W Linux idle, 117W fully loaded - Aug 2009 | |
| 2.8 GHz (3.1 GHz if <= 3 cores in use) AMD Phenom II "1055T" 6-core, 160G PATA HD, 4G DDR3 ram, Antec MT-350 80Plus PS, M5A88-V evo MB | 4W when off, 106W in BIOS, 73W Linux idle | |
| 3.4 GHz "270" 2-core, 160G PATA HD, NetCel RAID card, 4G DDR3 ram, Antec MT-350 80Plus PS, M5A88-V evo MB | 82W in BIOS, 48W Win 7, 61W Win 7 booting | |
| 3.1 GHz "250" 2-core, 160G PATA HD, 4G DDR3 ram, Antec MT-350 80Plus PS, M5A88-M MB | 73W in BIOS, typically 51W in Win 7, lowest is 40W user logged in | |
| 3.4 GHz "270" 2-core, 80G SATA HD, 4G DDR3 ram, Antec MT-350 80Plus PS, M5A78L-M LX MB | 68W in BIOS, typically 53W in Win PE (42W after settling down) | |
| 3.1 GHz "250" 2-core, 160G PATA HD, 8G DDR3 ram, Antec MT-350 80Plus PS, M5A88-V evo MB | 4W when off, 84W in BIOS | |
| 2.8 GHz (3.1 GHz if <= 3 cores in use) AMD Phenom II "1055T" 6-core, 160G SATA HD, 8G ECC DDR3 ram, Antec MT-350 80Plus PS, M4A785T-M MB | 4W when off, 104W in BIOS, 90W Linux idle, 146W all 6 cores in full use | |
| 3.2 GHz (3.6? GHz if <= 3 cores in use) AMD Phenom II "1090T" 6-core, 500G SATA HD, 16G ECC DDR3 ram, Antec MT-350 80Plus PS, M4A785T-M MB | 4W when off, 112W in BIOS, 89W Linux idle, 160W peak all 6 cores in full use | |
| 2.7 GHz AMD Phenom II X2 235E dual-core, 160G SATA HD, 2G ECC3 ram, Antec MT-350 80Plus PS, M4A785T-M MB | 4W when off, 60W in BIOS, 43W Win XP July 2010 | |
| 3.1 GHz AMD Phenom II X2 "255" dual-core, 160G SATA HD, 4G ram, Antec MT-350 80Plus PS, M4A785T-M/CSM MB | 64W BIOS, 37W Win XP idle August 2010 | |
| 3.1 GHz AMD Phenom II X2 550 2-core, 160G SATA HD, 2G ECC3 ram, Antec MT-350 80Plus PS, M4A785T-M MB | 4W when off, 78W in BIOS, 43W Win XP | |
| 3.0 GHz AMD Phenom II "940" quad-core, 160G SATA HD, 4G ram, Antec MT-350 80Plus PS, M2N-SE MX Plus MB | 6W when off, 61W Linux idle, 174W 1.5A all 4 cores in full use | |
| 3.0 GHz AMD Phenom II "940" quad-core, 160G SATA HD, 2G ram, Antec MT-350 80Plus PS, M3A78-CM MB | 4W when off, 89W Linux 800MHz, 146W Linux 4 core loaded, 91W BIOS | |
| 2.6 GHz AMD Athlon 64 "1640", 160G SATA HD, DVDBurner , 2G ram, Antec MT-350 80Plus PS, M2N-SE MX Plus MB | 6W when off, 74W BIOS, 46W Win XP) | |
| 3.0 GHz 6400+ AMD Athlon 64x2 "6000", 160G SATA HD, DVDBurner , 2G ram, Antec MT-350 80Plus PS, M2N-SE MX Plus MB | 6W when off, 116W BIOS, 48W Win XP) | |
| 3.2 GHz 6400+ AMD Athlon 64x2 "6400", 160G SATA HD, DVDBurner , 2G ram, Antec MT-350 80Plus PS, M2N-SE MX Plus MB | 6W when off, 1130W BIOS, 47W Win XP) | |
| 3.2 GHz 6400+ AMD Athlon 64x2, 80G SATA IDE HD, DVD rom, 2G ram, AOpen 2350-08ATA PS, M2N32-SLI Delux MB, Asus EN8500GT fanless video card | 60mA 7W when off, 183W 1.55A in BIOS, (103W without Cool 'n' Quiet Win XP) Swap in 2.4GHz single core Athlon 64 126W in BIOS, 98W in Win XP -- 5W saving for slower single core CPU Exchange old PCI ATI video card - BIOS 161W, Win XP 79W -- Video card is about 23W!! | |
| 2.2 GHz 3500+ AMD Athlon 64, 15G IDE HD, DVD rom | 92W cpu running, 67W booting, 113W max, 55W max power saving (70W without Cool 'n' Quiet installed), 9W standby, 5W 50mA when "off" | |
| 2.4 GHz AMD 3800+ Athlon 64, 512M ram, 80G SATA HD, 300W powersupply | 56W Win XP, 6W off, BIOS 84W (85W 1G ram, 85W remove temperature controlled 1.5W pancake fan) | |
| 2.4 GHz LE1620 AMD Athlon 64, 1G ram, 80G SATA HD, PLUS80 powersupply, micro case | 40W Win XP (49W no Cool'n'Quiet), 6W off, BIOS 66W | |
| 2.4 GHz LE1620 AMD Athlon 64, 1G ram, 80G SATA HD, regular powersupply, micro case | 52W Win XP, 7W off, BIOS 82W | |
| 2.2 GHz 3500+ AMD Athlon 64, 1G ram, 80G SATA HD, DVD rom, 300W powersupply, micro case | 68W logged in, 7W off, BIOS 84W | |
| 2.2 GHz 3500+ AMD Athlon 64, 1G ram, 80G SATA HD, DVD rom, 300W powersupply, micro case | Cool 'n' Quiet Enabled 58W logged in, 7W off, BIOS 84W | |
| 2x2.3 GHz 4400+ AMD Athlon 64x2, 1G ram, 80G SATA HD, 300W powersupply, micro case | Cool 'n' Quiet Enabled 63W logged in, 70W playing MP3, BIOS 88W (Dec 2007) | |
| 2.2 GHz 3500+ AMD Athlon 64, 1G ram, 80G SATA HD, 300W power supply, micro case | Cool 'n' Quiet Enabled 67W logged in, 69W playing MP3, BIOS 94W (Dec 2007) | |
| 2.4 GHz LE processor AMD Athlon 64, 1G ram, 160G SATA 2 HD, 300W power supply, micro case, embedded eth and video | Cool 'n' Quiet DISabled 7W off, 59W Win XP logged in, BIOS 79W (Apr 2008), 85W cloning 2 HDs in DOS | |
| single AMD Opteron 242 1.6GHz, 2G RAM 2 of 120G SATA HDs, Tyan dual CPU MB Antec True 430W (low efficiency) | 1W off, 8W standby, 129W in BIOS, 105W Linux (Sept 2009) | |
| P5B Premium MB, Intel 2.4GHz Core 2 Duo 6600 4G RAM 160G SATA HD Antec TruePower Trio 650W PS | 7W standby, 94W in BIOS, 79W Linux (Nov 2011) | |
| 1.5 GHz P4, 40G PATA H-drive, 512M ram | 80W in BIOS, 95W in Win XP | |
| 1.8 GHz P4, 20G PATA H-drive, 512M ram, Asus P4IBAS motherboard, NVidia card, Intel NIC, PowerMan FSP250-60GTV power supply (non-standard connectors!) | 76W 0.63A in BIOS, 61W typical Win XP (60 to 90W), 13W standby | |
| 2.4 GHz P4, 30G PATA H-drive, 512M ram, MB845AD2 motherboard, NVidia card, ?? NIC, PowerMan FSP250-60GTV power supply (non-standard connectors!) | 96W in BIOS, 72W typical Win XP (70 to 105W), 5W standby | |
| 2.4 GHz P4, 30G PATA H-drive, 512M ram, MB845AD2 motherboard, NVidia card, ?? NIC, Antec 80Plus EarthWatts power supply | 72W in BIOS, 57W typical Win XP, 6W standby | |
| 2.33 GHz Quad Xeon, 12G RAM, 3Ware Raid controller, 4 of 7200 rpm SATA II HD | 5W standby, 130W in BIOS, 119W in Linux, 196VA estimated (Apr 2009) | |
| 2.3 GHz Quad Xeon, 4G RAM, Supermicro 6015-VM3, dual 15k rpm 72G SCSI SAS HD | 17W standby, 141W in BIOS or Win XP-64, 152W peak | |
| 2.4 GHz P4, no HD, 512M ram, P4C 800-E motherboard, ATI card, Antec Earthwatts 80Plus power supply | 71W in BIOS | |
| 3.0 GHz P4, no HD, 512M ram, P4C 800-E motherboard, ATI card, Antec Earthwatts 80Plus power supply | 110W in BIOS | |
| 3.2 GHz P4, 120G PATA HD, 1G ram, Asus motherboard, ATI card, low eff (Sparkle) power supply | 10W standby, 165W BIOS, 186W booting, 116W Win XP | |
| 3.06 GHz Dual Xeon, 4G RAM, Intel SE7501WW2 (Sunfire V65x), dual 10k rpm 72G SCSI HD, CDROM | only one P/S plugged in and metered 22W standby, 223W in BIOS, 136W idle in Centos 5 (seems 9W/HD), 161W with 2 CPU cores in use | |
| 2.8 GHz Xeon, 2G RAM, Supermicro 6014p8 | 222W typical Unix, 268W peak, 166W idle, 3W standby? | |
| 500 MHz Pentium III, Dell XPST 500 | 72W in BIOS, 50W (idle) in Linux, 3W standby | |
| 2.4 GHz Xeon X3430, Dell T110 | 83W in BIOS, 56W (idle) in Linux, 130W peak in Linux, 8W standby (Dec 2009) | |
| 2.53 GHz P4, Dell Optiplex (super-micro size) | 42W typical Unix, 75W peak, 31W idle, 0W off | |
| 1.8 GHz P4, IBM NetVista, 40G PATA H-drive, 256M ram | 7W, 60mA in standby; 67W in BIOS, 83W cloning HD, 70W in Win XP when used, 46W in Win XP when not in use | |
| 3.0 GHz Dual core P4 IBM ThinkCenter, 80G PATA HD, 1.5G ram, DVDROM | 3W off, 122W booting, 64W in Win XP Pro | |
| 3.0 GHz P4 HT Sony PCV-C31L, 80G PATA HD, 200G SATA, 512M ram | 6W off, 142W BIOS, 100W in Win XP Pro | |
| 2.0 GHz Del Evo D510SFF P4, 40G PATA HD, 512M ram, CDROM | 50W in BIOS, 60W in Win 2000 | |
| 2.4 GHz P4 micro case, 40G PATA H-drive | 100W in BIOS, 7W 60mA when off | |
| 2.533 GHz P4desktop case, 1G RAM, DVDRom, 60G PATA H-drive | 96W in BIOS, 8W 70mA when off, 66W at Win XP login | |
| 2.66 GHz P4, 1G RAM, 2x CD-DVDRom, 2x 150G SATA H-drive | 138W in BIOS, 4W 40mA when standby or off, 107W typical, 170W booting, 150W defrag | |
| 2.8 GHz P4 Celeron micro case, 80G PATA H-drive | 109W in BIOS, 7W 60mA when off | |
| 3.06 GHz P4 Celeron micro case, 40G PATA H-drive | 111W in BIOS, 7W 60mA when off | |
| 3.06 GHz P4 Celeron D micro case, 1G ram, 40G PATA Hdrive, CDROM | 130W in BIOS, 97W XinXP login, 88W stanby, 5W 60mA when off | |
| 3.06 GHz P4 Celeron D micro case, 1G ram, 40G PATA Hdrive | 123W 1.43A in BIOS, 87W 1.04A XinXP login, 7W 80mA when off | |
| 2.53 GHz P4 Dell Optiplex sx260, ? drive | 42W (31W idle HD, 75W peak), 7W when off | |
| 2.8 GHz P4 computer, 1G ram | 82W, 63W idle, 120W bootup, 7W when off | |
| 3.0 GHz HTT P4 computer, 1G ram | 131W, 85W idle, 150W bootup, 7W when off | |
| 3.0 GHz HT P4 computer, 1G ram, SATA HD, DVDROM | 85W, 77W idle, 120W bootup, 7W when off | |
| 2.8 GHz Dual Xenon Supermicro 6014p8 computer, 2G ram | 222W, 166W idle, 268W bootup, 7?W when off | |
| 2.4 GHz P4 Celeron computer, 40G IDE drive | 80W typical (45W at times), 7W 60mA when off | |
| 2.4 GHz P5 Intel Core Duo computer, 5 Sata drives, 3ware Raid controller (9W), DVD burner | 174W in BIOS, 153W in Linux, 13W 60mA when off, 3W when power switch is actually turned off | |
| 2.4 GHz P5 Intel Core Duo computer as above, 1 SATA, DVD burner | 120W in BIOS | |
| 1.3 GHz Celeron computer (ATX, 40G HD) | 55W (0.805A draw) (6W and 70mA when "off") | |
| 1.3 GHz Celeron computer (ATX, AOpen motherboard, 40G HD) | 53W in BIOS, 60W in Win 98SE, 36.5W in Win 98SE suspend mode, 3W per 40G ID HD, 7W and 70mA when "off" | |
| 1.2 GHz Celeron computer (ATX, Asus TUV motherboard, 40G HD) | 56W in BIOS, 6W and 70mA when "off" | |
| 1.2 GHz Celeron computer (ATX, Asus TUV motherboard, 40G HD, CDROM, 512M) | 63W in BIOS, 43W standby, 4W off | |
| 1GHz P3 Compaq (2001-05-15) computer (ATX P/S, 1 HDs, 1 CDROM) | 3W standbye, 48W typical, 72W booting | |
| 900 MHz P3 Celeron computer (P3 ATX P/S, 2 HDs) | 40W, 60W at bootup | |
| 700 MHz P3 Celeron ATX computer | 63W, 72W at bootup, 48W idle | |
| 600 MHz P3 ATX, 512M, 2 NICs, 1 HD, computer | 60W in BIOS, 48W in Linux | |
| 633MHz P3 Celeron ATX computer, 128 -> 384M ram, 2 PATA HDs, Asus CUV4-C motherboard | 7W off, 60W in BIOS, 61W in Win XP | |
| 500MHz P2 Celeron computer (ATX) | 47W | |
| 466MHz P2 Celeron computer (ATX) | 80mA 6.5W standby, 670mA 58W BIOS, 460mA 49W booting | |
| 366MHz P2 Celeron computer (AT), audio card, speaker, 128M, 2.1G HD | 48W BIOS, 35W Linux | |
| 333MHz AMD K6-2 computer (AT) | 54W | |
| AMD K6-333MHz computer, 128M ram, AP58 motherboard (AT) | 57W in BIOS | |
| 133MHz Pentium computer (AT) | 33W | |
| 133MHz Pentium S P5HX-B computer (AT), 2G HD, 40M ram | 45W | |
| 1.7 GHz Pentium M computer, 1G RAM, 80G HD, special camera capture board | 7W standby, 65W BIOS | |
| 486/66MHz computer (AT) | 31W | |
| 486DX/50?MHz computer (AT) | 25W | |
| AMD 386/40MHz computer (AT) | 32W | |
| National Instruments PCI-6024E PCI Data I/O card | 4.5W, in BIOS only - card not used | |
| computer harddrive (IDE, 8G, 5400rpm) | 5W | |
| 18" Sony SDM-X82 LCD monitor | 1280x1024 25 to 51W depending upon brightness, 0W when off, 2W power saving (mfg Feb 2003) | |
| 17" Acer AL1714 LCD monitor | 1280x1024 30 to 46W depending upon brightness, 4W 40mA when off or power saving (DC power blob) | |
| 17" Acer AL1716 LCD monitor | 1280x1024 33W, 2W when off, 2.5W in power saving (integrated power source) | |
| 17" Benq FP71G+ LCD monitor | 1024x768 21W, <1W when off or power saving (integrated power source) | |
| 19" Acer AL1951 LCD monitor | 1280x1024 46W, 2W when off, 2W in power saving (DC power blob) | |
| 24" Philips M1244EC 16x9 LCD monitor | VGA 45W, 2W when off or power saving, Sept 2010 | |
| 17" LG L1710B LCD monitor | 26W on, 3W when off or power saving | |
| 17" LG L1715S LCD monitor | 18 to 32W on, 25W typical, 3W when off or power saving | |
| 17" LG L1750S LCD monitor | 32W on, 2W when off or power saving | |
| 22" LG E2211 LED LCD monitor | 17 to 26W on, 2W when off or power saving | |
| 17" Samsung 710n LCD monitor | 25 to 30W on, 3W when off or power saving | |
| 17" Viewsonic VE710b LCD monitor | 25 to 34W on, 2W when off or power saving | |
| 17" Viewsonic VX2450wm-LED LCD monitor | 13 to 26W on, 20W typical, 0W when off or power saving | |
| 19" LG L1952TO LCD monitor | 1280x1024 32->38W, 2W when off or power saving | |
| 19" LG L1953T LCD monitor | VGA 27W, 2W when off or power saving, Sept 2010 | |
| 17" LG L1752TQ LCD monitor | 1280x1024 24->34W, 2W when off or power saving | |
| 20" LG W2042TQ LCD widescreen monitor | 1680x1050 45W, 2W when off or power saving | |
| 20" LG W2043T LCD widescreen monitor | 1600x900 39W, "0"W when off or power saving (ie <0.5W) | |
| 22" LG W2242TQ LCD widescreen monitor | 1680x1050 48W, 2.5W when off or power saving | |
| 19" ViewSonic VA1931wa LED LCD widescreen monitor | 1366x768 22W 100% brightness, 10W lowest), 2W when off or power saving Aug 2011 | |
| 19" ViewSonic VX1932WM-LED LCD widescreen monitor | 1400x800 19W (100% brightness, 15W 50%), 3W when off or power saving, audio system not used when power metering, Viewsonic claims 15W typical, <1W off, July 2011 | |
| 21.5" LG E2240T LED LCD widescreen monitor | 1920x1080 31W (100% brightness, 18W 0%, 24W 50%), "0"W when off or power saving, June 2011 | |
| 22" Asus VE228 LED LCD widescreen monitor | 1920x1080 25W 100% brightness, 14W 0%), "0"W when off or power saving - May 2011 | |
| 17" NEC Multisync 1770VX LCD monitor | 1280x1024 28W (<1W "low power mode") | |
| Pandigital Pan1202 digital picture frame | 15W On 0W Off | |
| Citizen JM5524 Microwave Oven | 3W Off | |
| Danby Diplomat DMW904W (rated 900W) Microwave Oven | 0W Off, 1235W on (May 2012) | |
| Microwave Oven | 6W, 50mA Off 1.4kW On | |
| Toaster Oven | toast bagel, 0.057 kwH in 2 min. 30 sec, 1.51 kw power draw | |
| Toaster | toast bread, 0.031 kwH in 1 min. 50 sec, 1.13 kw power draw | |
| Toaster Oven | bake ginger cake: 0.053 kwH heatup, 50 min total 0.335 kwH | |
| Toaster Oven | heat fish sticks 200C/400F: 24 min total 0.238 kwH | |
| Light Dimmer - incandescent lamps | 2 x 40W (1 regular one extra life), 75W when on, 24W when very dim, aprox 1/2 brightness at 60W, light filaments barely turning red at 15W! Summary - a CFL would give more light for less power even when dimming the light. | |
| T12 fluorscent lights | 4 x F40 (40W) = 174W | |
| T12 fluorscent lights, pull 1 tube | 2 x F40 (40W) + one unused ballast = 98W | |
| T12 fluorscent lights, pull 2 tubes | two unused ballasts = 21W | |
| T8 dual fluorscent lights | both 59W pull 1 tube 32W pull both 0W | |
| candelabra socket incandescent night light | 7W | |
| night light Globe 100,000 hours | rated 0.7W 6.7mA 120Vac | |
| Luminescent night light | apparently rated 0.08W | |
| Sunbean Slow cooker / crock pot | 107W 0.86A low, 190W 1.51A high | |
| Smoke detectors | aprox 5W each | |
| CO detector | 4W, 40mA | |
| GFI outlet GECI 1992 model | 0W (<<1W) | |
| Central Vacum transformer | 7W, 60mA (1990's vintage, unloaded, aprox 12Vac) | |
| Small Central Vacum transformer | 2W (2010 vintage, small one on a circuit board) | |
| Door bell transformer | 4W (unloaded, similar to Central Vac. transformer 1990's vintage) | |
| Garage Door opener | 3W, 30mA (standby) | |
| 1970's 1980's? vintage full-sized fridge with coils in the back - Sears Coldspot, 6.8A, 720w heater | (summer)10.4 kWh/yr in 48.3h - 215W average, 30W when off (resistive heaters); butter warmer turned off (10W extra) - re-measured 11.36kWh in 61.32h in December | |
| 1990's vintage "Bar" fridge | 298 kWh/yr based upon a 96 hour measurement | |
| 2005 vintage full sized fridge | 412 kWh/yr | |
| pre 1993 full sized UPRIGHT freezer | 158W running, 2.23kWh running 15:14:30 in 24 hours = 93W average | |
| 2004 Woods UPRIGHT 17cf freezer | rated 420 kWh/yr, 151W running | |
| Fridge conversion: using 2004 Woods UPRIGHT 17cf freezer | 346Wh/day Sept 2010 | |
| 1993 Danby D1705WR full-fridge (no freezer) [rated 36kWh/mo = 432 kWh/yr = 47W continous average] | 28W [over 22 hours]( 805Wh in 22.4h = 35.9Wavg, 1.26kWh in 36.5h 34.5Wavg - May 2006, 21C) or 39.5 W [over 26.3 hours in the summer aprox 25C] typically 115W while running Summer 2006 26C average 72.2h 3.85kWh = 53.3W avg Aug 2006, 21C avg, 72.7h 2.80kWh = 38.5Wavg 26:52:15 run time in 4 days (3.05kWh) 0.77kWh/day at about 4.5C in fridge, 18C room temp (Nov 2008) 0.61kWh/day fridge at 7C, 18C room temp - failing thermostat (Ranco K59 P4891 90-22-5P24) | |
| 197? freezer 21cu ft chest | 250W when running, est. aprox $100/yr in a cold cellar at aprox 10C | |
| 1995 freezer 7cu ft chest [rated 32kWh/mo (384 kWh/yr) = 42W continous average] | 46W [over 19 hours] 110W while running | |
| 2001 Woods freezer 12cu ft chest [rated 351kWh/yr = 40W continous average], -18C | 46W [650Wh in 13.8h, 667Wh in 14.4H, 1.2kWh in 22.7h, 2.27kWh in 46.5h, 4.2kWh in 94.3h, 134kWh in 290h] 95W while running 4.28kWh in 82.7h = 51.8W avg Aug 2,2006 in 25C room 1.15kWh/day over 6 days 48W average Sept 2010 | |
| Fridge conversion: using 2001 Woods freezer 12 cu-ft chest | 300Wh/day, estimated at 1.1kWh/day / 2.5 = 440Wh/day, 20C ambient, 6C in fridge | |
| Maytag Neptune MAH6500A front load washer 3.4cu-ft | 175Wh, 28.9 gal | |
| Frigidaire FWT645RH washer 3.1cu-ft | 155Wh, 34.8gal | |
| top load Maytag washer 2.7?cu-ft | 172Wh, 33.8gal | |
| front load Kenmore (2002 model) washer | 128Wh, 20L hot + 92L cold water (with extra rinse), 51min to wash clothes, washes 2x as much as top loading machine with 1/2 the detergent | |
| top load Kenmore (aprox 1985 model) washer | 170Wh, 60L hot + 90L cold water, aprox 25min to wash clothes | |
| Items not measured:
GFI outlets (measured 0W), furnace (estimated from current draw), drier (estimated from current draw), Oven clock | ||
| Temperature (C) | ||
|---|---|---|
| Vents | LOW (1/2 power) | HIGH |
| All Closed | 40C | 54C |
| All Open | 38.5C | 49C |
Using a MaxiTrip 1.2 TP 100 I measured the following gasoline consumption on a 2005 Toyota
Echo (in Aug 2011):
cold idle: 1.8L/h, 20C ambient, 1250 rpm
warm idle: 0.5 to 0.6L/h, 26C ambient, 650 rpm, coolant 84C
I hoped to have a flat road on a windless day to measure the fuel consuption at 70km/h in 3rd, 4th and 5th gear to see the effect of the gear ratio. However, it was very difficult to hold a steady fuel consumption - so much so that I gave up. Holding a steady speed wasn't the issue - but the gas consuption bounced between 2.4 and 4 L/100km while holding an apparently steady speed. Perhaps by logging the data and doing some averageing it would be possible.
I would like to remove the power steering pump and see the effect upon fuel consumption as it's apparently signif. However, that first requires removing the serpentine belt and tensioning the belts appears difficult.
Various people have mentioned that removing the power steering pump TARGET="_blank">reduces fuel consumption at idle and for in-town driving. When a car is equiped with power steering the gear ratio is modified so that, with power steering, the wheels would turn more. This means that removing the power steering (by removing the belt) will result in steering that takes much more effort at low speeds. This is easy to verify - when driving on in a safe place, turn off the engine and see how much force it takes to steer. In particular note the steering effort at 5km/h or 3mph.
There are options to remove the power steering.
With our 1997 Escort I went with oversized tires to lower the engine RPM - as well as get cheaper tires. So instead of 185/65R14 I bought 185/70R14. 7 years later when the Escort had a failing transmission, was 12 years old, and not worth fixing the tires moved to our 2005 Toyota Echo.
Here is a comparison of tires for the Echo. Note that 175/65R14 is stick, 185/60R15 is an option (which our car came with - but the seller swapped out the 15" rims, put in 14" ones with stock no-season tires.
Note that sizes below are from http://www.1010tires.com/tiresizecalculator.asp
I assume that the calculated sizes are for summer tires.
| Parameter | Stock 175/65R14 "Majestic Brand" | Stock 185/60R15 | 175/70R14 | 185/70R14 | 185/70R14 Motomaster snows | 185/65R14 worn down summer |
|---|---|---|---|---|---|---|
| Cost | $84 | $100 | $80 | $82 | - | - |
| Diameter | 23.0 | 23.75 | 23.6 | 24.2 | 24.5 | 23.3 |
| Speed | 100km/h | 97 | 97 | 95 | - | |
| Dia %diff | - | 3.3% | 2.9% | 5.1% | - | |
| Weight with steel rim | 28lb | 35lb | - | |||
In an attempt to calibrate the speedo in the '05 Echo we ran tests using a GPS:
P185/70R14 tires, at 100km/h, the GPS indicates ~98.5 km/h or 1.5% lower speed than the speedo!
P175/65R14 tires, at 100km/h, the GPS indicates ~92 km/h for
2009 Nissan Versa 1.6L? 1.8L? automatic transmission, driven 335km in Vancouver May 2010. 29.324L of gas used in mostly highway driving. That gives 8.8L/100km when the car is rated at about 8 city and 6 highway. This car had a nice low idle and generally worked well, but the milage sucks!
Here is the milage of our 3 cars. The Chevy Sprint we had for 12 years. The Ford Escort Wagoon, aka "Black Beast from Hell", we had from it's 5th to it's 12th year (transmission failure) and data from the 2005 Toyota Echo is lacking as we've only hhad the car since xmas 2009. Note that the tires on the Escort were about 3% oversized and that's been factored in to improve the milage 3%.
Here is a graph of the milage of various cars we've had in L per 100km and mpg (Imperal gallons)
Our Ford Escort had an automatic transmission. A friend with a 1999 Escort Wagon
with a 5-speed reports the following milage:
I am currently getting 32 mpg with our Escort in the winter.
When we lived in the country, we were getting 41 mpg average annually.
Monthly averages ranged from 37mpg in winter to 44mpg in summer. Usually on a trip in the summer we would get close to 50mpg.
Monthly averages are ranging from 31mpg in winter to 42mpg in summer.
| Vehicle | Age | Engine | HC (ppm) | CO (test/max) | NO (test/max) | Dilution | ||
| 2005 Toyota Echo Sedan (5 spd) | 5 | 1.5L | 5 / 66 | 0.01 / 0.37 | 2 / 505 | ?? | 14.21, 2568 rpm | |
| 2005 Toyota Echo Sedan (5 spd) | 6 | 1.5L | 2 / 66 | 0.00 / 0.37 | 1 / 505 | ?? | 14.7, 1804 rpm | |
| 1 / 150 | 0.00 / 0.7 | N.A. | ?? | 13.8, Idle 1804 rpm | ||||
| 1990 Eagle Vista 4WD idle (full time 4WD) | 11 | 2.0L | 105 / 200 | 0.07 / 1.00 | N.A. | 14.97 | ||
| 1990 Eagle Vista 4WD 2500 rpm | 55 / 200 | 0.4 / 1.00 | N.A. | 15.1 | ||||
| 1991 Chev Sprint | 10 | 1.0L | 102 / 116 | 0.12 / 0.66 | 84 / 1380 | 15.5 | ||
| 11 | 37 / 116 | 0.02 / 0.66 | 82 / 1380 | 14.02 | 2320 rpm | |||
| 75 / 200 | 0.05 / 1.00 | N.A. | 14 | Idle 814 rpm | ||||
| 1992 Subaru Justy 4WD Bad Oxygen sensor | 9 | 1.2L | 0 / 106 | 0 / 0.59 | 1457 / 827 | 14.8 | ||
| 1992 Subaru Justy 4WD Good Oxygen sensor | 6 / 106 | 0.01 / 0.59 | 139 / 827 | 15.01 | ||||
| 11 | 5 / 94 | 0.02 / 0.52 | 260 / 732 | ?? | 2539 rpm | |||
| 9 / 200 | 0.03 / 1.0 | N.A. | ?? | 813 rpm | ||||
| 1997 Ford Escort wagon (4 spd auto) | 5.5 | 2.0L | 18 / 86 | 0.14 / 0.48 | 184 / 656 | 14.9 | 1674 rpm | |
| 14 / 200 | 0.01 / 1.00 | N.A. | 14.8 | Idle 1032 rpm | ||||
| 6.5 | 2.0L | 5 / 76 | 0.01 / 0.42 | 238 / 580 | 13.11 | 1884 rpm | ||
| 18 / 200 | 0.09 / 1.00 | N.A. | 12.77 | Idle 738 rpm | ||||
| 7.5 | 2.0L | 0 / 66 | 0.09 / 0.37 | 6 / 505 | 14.9 | 1877 rpm | ||
| 0 / 200 | 0.21 / 1.00 | N.A. | 15.2 | Idle 921 rpm | ||||
| 9.5 | 2.0L | 5 / 68 | 0.01 / 0.38 | 5 / 526 | 14.9 | 1813 rpm Gas cap replaced | ||
| 5 / 200 | 0.02 / 1.00 | N.A. | 14.9 | Idle 988 rpm | ||||
| 1999 Ford Escort wagon (5 spd) | 4 | 2.0L | 11 / 76 | 0.05 / 0.42 | 11 / 580 | ?? | 2753 rpm | |
| 12 / 150 | 0.3 / 0.7 | N.A. | ?? | Idle 768 rpm | ||||
| 1998 Chrysler Truck | 3 | 5.3L | 19 / 92 | 0.06 / 0.51 | 415 / 1269 | 15.1 |
| Light Source | Power | Brightness Lumens | Lumens/Watt | Cost | Lifetime (hours) | Comments |
| T8 4' fluorscent tube | 32W | 2950 | 92 | $4 | 20,000 hour life | instant start 5000K temperature is too blue/harsh |
| GE Standard CF (Compact Flourscent) | 15W | 700 | 47 | $10.50 | 6,000 hour life | fairly long - doesn't fit all lamps |
| Soft white | 40W | 460 | 12 | ? | 1,500 | |
| Long life | 40W | 420 | 11 | ? | 3,000 | |
| Soft white | 60W | 840 | 14 | ? | 1,000 | |
| Halogen | 60W | 900 | 15 | ? | 3,000 | www.lighting.philips.com/nam |
| Noma CF | 10W | 520 | 52 | $3 | 8,000 | very short, time delayed start, 2700k (rated for -15C or warmer) |
| Noma CF | 13W | 800 | 61 | $2ea (6-pack) | 8,000 | very short, very narrow base |
| Ikea CF | 11W | ? | ? | $5 | life? | short, time delayed start, harsh color |
| Sylvania CF | 30W | 2000 | 67 | 10.00 | 6,000 hour life | fat and long |
| Sylvania CF | 13W | 800 | 62 | 8,000 hour life | very short and thin | |
| Sylvania CF | 9W | 450 | 50 | 13.00 for 2-pack | 8,000 hour life | small socket, starts at reduced brightness |
| Sylvania CF | 4W | 160 | 40 | 8.00 | 6,000 hour life | small socket, starts at reduced brightness |
| IKEA CF | 5W | 170 | 34 | 7.50 | 10,000 hour life | small socket, starts at reduced brightness |
| IKEA CF | 7W | 300 | 42 | 7.00 | 10,000 hour life | small socket, starts at reduced brightness |
| Home Hardware CF | 25W | 1500 | 60 | ?? | 10,000 hour life | short, but fat - fits many lamps |
| Commercial Elec. (Home Depot)CF | 23W | 1600 | 70 | ?? | 10,000 hour life | short, but fat - fits many lamps, instant start |
| Home Hardware CF | 15W | 900 | 60 | $5 | 6,000 hour life | very short - fits all lamps (rated as 70W equivalent) |
| Philips Marathon CF | 15W | 900 | 60 | $22 aprox | 10,000 hour life | very short - fits all lamps |
| Philips Marathon CF | 20W | 1200 | 60 | $25 aprox | 10,000 hour life | short - fits many lamps |
| Pricemark [Sylvania?] spiral CF | 15W (12W actual draw) | ? | ? | $8 aprox | 10,000 hour life | short but fat,Starts quickly |
| Pricemark [Sylvania?] spiral CF | 20W (14W actual draw), 23W | ? | ? | $8 aprox | 10,000 hour life | short but fat,Starts quickly |
| incandescent filtered with a red mask ie emergency or car tail light | 140 | 460 | 3 | ? | ||
| High Efficiency LED | NA | NA | 80 (1998 vintage) | ? | very long | |
| High Efficiency OLED | NA | NA | 50 (2000 vintage, achieved in production Dec 2005) | ? | very long | Organic LED |
CFL Bulb Type | Comment |
| Phillips Marathon | These bulbs have a noticable time delay to turn on and take about 30 seconds to achieve full brightness |
| Pricemark (Osram / Sylvania?) | They turn on very quickly at full brightness. I've heard that they don't last as long. |
