Difference between revisions of "Power Usage"

From AwkwardTV
Jump to: navigation, search
m
m (reverting spammed page)
 
(2 intermediate revisions by 2 users not shown)
Line 1: Line 1:
[http://pticaja-ptica.freehostia.com/directory/impastatrice-pasta.htm impastatrice pasta] [http://commodore-guff.freehostia.com/styles/mercedes-clk37.htm mercedes clk amg] [http://superhank.freehostia.com/content/o-cuor/ o cuor dolcissimo] [http://eaes7.freehostia.com/lib/congiunto.htm congiunto] [http://celare.freehostia.com/description/acer-lcd20/ acer lcd dvi] [http://anubis8.50webs.com/library/sv-av/ sv av50] [http://rathchavady.freehostia.com/description/hands-up/ hands up] [http://ag666.50webs.com/view/vertigine-per/ vertigine per un assassino] [http://offleeewild1.50webs.com/library/pf-/ pf 700 tr] [http://runnyn.freehostia.com/library/jbl-duet/ jbl duet silver] [http://ag666.50webs.com/view/brecker-brothers/ brecker brothers] [http://anubis8.50webs.com/library/san-martino/ san martino analisi testuale] [http://njoka.freehostia.com/small/innovazione-tecnologica.htm innovazione tecnologica] [http://alfrizie.angelfire.com/content/george-cloney.htm george cloney] [http://keokepa.50webs.com/library/sito-di/ sito di victoria silvested] [http://midwestman.50webs.com/view/amore-tra/ amore tra i polli] [http://deharte.angelfire.com/data/digestione/ digestione] [http://someoddgalaxy.freehostia.com/articles/due-dotati/ due dotati per mia moglie] [http://anubis8.50webs.com/library/kit-gps/ kit gps palmari] [http://midwestman.50webs.com/view/ozone-dintei/ ozone dintei dragonstea] [http://vlano.50webs.com/styles/nuova-alfa/ nuova alfa 147 2 serie] [http://leshji.50webs.com/data/istituti-moda/ istituti moda a milano] [http://rathchavady.freehostia.com/description/singole-taranto/ singole taranto] [http://leshji.50webs.com/data/dance-with/ dance with me] [http://queenbabypie.freehostia.com/html/thyolo/ thyolo] [http://anubis8.50webs.com/library/concerti-lecce/ concerti lecce] [http://keokepa.50webs.com/library/diomedes/ diomedes] [http://alfrizie.angelfire.com/content/chiesetta-tra.htm chiesetta tra le rose] [http://blind9justice.50webs.com/foto-voyeur/ foto voyeur grande fratello] [http://krasniioktyabr.50webs.com/tv-colori/ tv colori 5] [http://ag666.50webs.com/view/ricerche/ ricerche] [http://njoka.freehostia.com/small/video-o.htm video o zone] [http://pticaja-ptica.freehostia.com/directory/romina-e.htm romina e al bano] [http://queenbabypie.freehostia.com/html/per-favore4/ per favore non sparate col cannone] [http://superhank.freehostia.com/content/acrobatica/ acrobatica] [http://anubis8.50webs.com/library/ecoscandaglio-garmin/ ecoscandaglio garmin 240] [http://offleeewild1.50webs.com/library/punto-fiat/ punto fiat gpl] [http://njoka.freehostia.com/small/monkey-hong.htm monkey hong] [http://offleeewild1.50webs.com/library/julieta-andar/ julieta andar conmigo] [http://ag666.50webs.com/view/yakon/ yakon] [http://leshji.50webs.com/data/traduzione-yeah/ traduzione yeah] [http://eaes7.freehostia.com/lib/die-perfekte.htm die perfekte welle] [http://keokepa.50webs.com/library/streghe-la/ streghe la seconda stagione completa] [http://rathchavady.freehostia.com/description/lavabiancheria-hoover/ lavabiancheria hoover] [http://runnyn.freehostia.com/library/antonello-de59/ antonello de pierro carmen di pietro] [http://eaes7.freehostia.com/lib/lo-mas.htm lo mas importante que iso el campesino] [http://ag666.50webs.com/view/dragostei-in/ dragostei in tei] [http://blind9justice.50webs.com/chipstation/ chipstation] [http://pticaja-ptica.freehostia.com/directory/casa-dello.htm casa dello smeraldo] [http://eaes7.freehostia.com/lib/atelier-gio.htm atelier gio sposa] [http://runnyn.freehostia.com/library/nave-in/ nave in bottiglia] [http://runnyn.freehostia.com/library/logitech-precision/ logitech precision gaming headset] [http://danikrv.50webs.com/small/u-best/ u2 best of] [http://runnyn.freehostia.com/library/modern-imes/ modern imes] [http://celare.freehostia.com/description/www-vestidos/ www vestidos de novia com] [http://queenbabypie.freehostia.com/html/k-amro/ k amro] [http://midwestman.50webs.com/view/edonkey/ edonkey] [http://superhank.freehostia.com/content/palm-e2/ palm e] [http://runnyn.freehostia.com/library/la-regina25/ la regina di picche] [http://njoka.freehostia.com/small/carman-alectra.htm carman alectra] [http://someoddgalaxy.freehostia.com/articles/lcd-televisore/ lcd televisore monitor] [http://blind9justice.50webs.com/mazel-abraham/ mazel abraham] [http://blind9justice.50webs.com/panjabi-mc/ panjabi mc mirza part 2] [http://heartlessfriend.freehostia.com/library/balocchi-spa/ balocchi spa] [http://someoddgalaxy.freehostia.com/articles/the-chronicles/ the chronicles of life and death good] [http://someoddgalaxy.freehostia.com/articles/adventura-hermanita/ adventura hermanita] [http://pothomse.angelfire.com/benq-cellulari/ benq cellulari] [http://offleeewild1.50webs.com/library/acer-/ acer 1912 s] [http://rathchavady.freehostia.com/description/lavastoviglia-a2/ lavastoviglia a incasso classe aaa] [http://danikrv.50webs.com/small/testi-di/ testi di leggi] [http://pticaja-ptica.freehostia.com/directory/auersperg-anton.htm auersperg anton alexander von] [http://ag666.50webs.com/view/franks-adenture/ franks adenture] [http://deharte.angelfire.com/data/calza-velata/ calza velata] [http://stbillin.angelfire.com/web/il-sito1.htm il sito ufficiale di valeria marini] [http://celare.freehostia.com/description/webcamporno-free/ webcamporno free] [http://blind9justice.50webs.com/spartiti-di/ spartiti di nelly furtado] [http://ag666.50webs.com/view/papi-sanchez/ papi sanchez] [http://vlano.50webs.com/styles/vitrina-in/ vitrina in portugal lisboa] [http://krasniioktyabr.50webs.com/se-non/ se non li conoscete] [http://pticaja-ptica.freehostia.com/directory/canzone-scaricare1.htm canzone scaricare gratis] [http://offleeewild1.50webs.com/library/gesu-musica/ gesu musica] [http://wosligersy.angelfire.com/www-rasmus/ www rasmus it] [http://danikrv.50webs.com/small/librto-it/ librto it] [http://heartlessfriend.freehostia.com/library/dos-minuto/ dos minuto] [http://leshji.50webs.com/data/gli-uomini/ gli uomini non possono essere violentati] [http://leshji.50webs.com/data/macrogalidia/ macrogalidia] [http://blind9justice.50webs.com/www-costa/ www costa] [http://blind9justice.50webs.com/trailer-spiderman/ trailer spiderman 2 da scaricare] [http://leshji.50webs.com/data/cerca-lavoro/ cerca lavoro partime] [http://runnyn.freehostia.com/library/la-mesa10/ la mesa que mas aplauda midi] [http://danikrv.50webs.com/small/premi-/ premi 2006 api benzina] [http://queenbabypie.freehostia.com/html/acqua-cuffie/ acqua cuffie auricolari e] [http://someoddgalaxy.freehostia.com/articles/cybershot-dsc12/ cybershot dsc h1] [http://raguerla.angelfire.com/articles/bilancia-cristallo/ bilancia cristallo] [http://celare.freehostia.com/description/jaguar-roma/ jaguar roma] [http://vlano.50webs.com/styles/tubo-luminoso/ tubo luminoso] [http://celare.freehostia.com/description/la-loggia1/ la loggia degli innocenti libri] [http://queenbabypie.freehostia.com/html/kaori-muraji/ kaori muraji] [http://raguerla.angelfire.com/articles/tracce-greco/ tracce greco 2004] [http://danikrv.50webs.com/small/modulo-ordine/ modulo ordine yu gi oh] [http://queenbabypie.freehostia.com/html/pantaloni-classici/ pantaloni classici uomo abbigliamento] [http://smfarrowik.angelfire.com/small/camera-di4/ camera di commercio di brescia] [http://vlano.50webs.com/styles/marilyn-manson/ marilyn manson portrait of an american] [http://superhank.freehostia.com/content/www-sex42/ www sex toon com] [http://keokepa.50webs.com/library/thislove-maroon/ thislove maroon5] [http://blind9justice.50webs.com/ringhiere/ ringhiere] [http://commodore-guff.freehostia.com/styles/tettone-orientali.htm tettone orientali] [http://blind9justice.50webs.com/www-timtour/ www timtour it] [http://heartlessfriend.freehostia.com/library/moder-times/ moder times] [http://commodore-guff.freehostia.com/styles/rifiuto-della1.htm rifiuto della morte libri] [http://rathchavady.freehostia.com/description/appartamento-affitto10/ appartamento affitto lido ferraresi] [http://krasniioktyabr.50webs.com/olympus-xd/ olympus xd picture card 512mb] [http://nejoaus.angelfire.com/river-march.htm river march] [http://ag666.50webs.com/view/maxtor-hard/ maxtor hard disk 80gb] [http://keokepa.50webs.com/library/insbruk/ insbruk] [http://ag666.50webs.com/view/tecnoedil/ tecnoedil] [http://offleeewild1.50webs.com/library/tesi-laurea/ tesi laurea infermieri dialisi] [http://eaes7.freehostia.com/library/video-bollenti.htm video bollenti] [http://someoddgalaxy.freehostia.com/articles/deborah-manoni/ deborah manoni] [http://anubis8.50webs.com/library/holly-e/ holly e benji sexi] [http://offleeewild1.50webs.com/library/no-matter/ no matter what you do] [http://commodore-guff.freehostia.com/styles/skoda-fabia5.htm skoda fabia 14 tdi] [http://someoddgalaxy.freehostia.com/articles/chitarra-classica/ chitarra classica ibanez] [http://blind9justice.50webs.com/julee-cruise/ julee cruise] [http://rathchavady.freehostia.com/description/lapointe-paulmarie/ lapointe paulmarie] [http://someoddgalaxy.freehostia.com/articles/hnl/ hnl] [http://offleeewild1.50webs.com/library/extin/ extin] [http://commodore-guff.freehostia.com/styles/maria-mazza.htm maria mazza] [http://pticaja-ptica.freehostia.com/directory/nora-johnes.htm nora johnes] [http://blind9justice.50webs.com/concimazione-olivo/ concimazione olivo] [http://vlano.50webs.com/styles/foto-di/ foto di nudisti in spiaggia] [http://eaes7.freehostia.com/lib/fumetti-pokemon.htm fumetti pokemon xx] [http://krasniioktyabr.50webs.com/dvd-neon/ dvd neon genesis evangelion] [http://keokepa.50webs.com/library/f-raptor/ f22 raptor] [http://anubis8.50webs.com/library/cordless-philips/ cordless philips dect 121] [http://someoddgalaxy.freehostia.com/articles/terenzi/ terenzi] [http://smfarrowik.angelfire.com/small/www-orgie/ www orgie gratis it] [http://queenbabypie.freehostia.com/html/peabo-bryson/ peabo bryson] [http://someoddgalaxy.freehostia.com/articles/dgs/ dgs] [http://blind9justice.50webs.com/acer/ acer 2023] [http://celare.freehostia.com/description/router-wifi10/ router wifi 802 11g] [http://vlano.50webs.com/styles/mario-puzo/ mario puzo] [http://blind9justice.50webs.com/francesco-range/ francesco range] [http://commodore-guff.freehostia.com/styles/www-googie.htm www googie] [http://leshji.50webs.com/data/helene-segara/ helene segara] [http://ag666.50webs.com/view/usb-midisport/ usb midisport 8x8 s] [http://stbillin.angelfire.com/web/codigo-de.htm codigo de comercio] [http://leshji.50webs.com/data/win-mx/ win mx in itaiano] [http://commodore-guff.freehostia.com/styles/box-hardisk1.htm box hardisk] [http://celare.freehostia.com/description/barbara-shett/ barbara shett] [http://someoddgalaxy.freehostia.com/articles/racconti-gabriele/ racconti gabriele arcangeli] [http://queenbabypie.freehostia.com/html/emilio-vedova/ emilio vedova] [http://anubis8.50webs.com/library/samsung-dvd/ samsung dvd p345] [http://maheinze.angelfire.com/diari-della.htm diari della motocicletta] [http://maheinze.angelfire.com/motocicli-usati.htm motocicli usati] [http://blind9justice.50webs.com/i-m/ i m your boogie man] [http://pticaja-ptica.freehostia.com/directory/odjednom.htm odjednom] [http://deharte.angelfire.com/data/llano-estacado/ llano estacado] [http://njoka.freehostia.com/small/vienna-luci.htm vienna luci rosse] [http://offleeewild1.50webs.com/library/logitech-casse/ logitech casse 5500] [http://keokepa.50webs.com/library/rundi/ rundi] [http://blind9justice.50webs.com/dubble/ dubble] [http://raguerla.angelfire.com/articles/salone-del2/ salone del mobile] [http://krasniioktyabr.50webs.com/accompagnatrici-cinesi/ accompagnatrici cinesi] [http://danikrv.50webs.com/small/la-notte/ la notte del piacere] [http://eaes7.freehostia.com/lib/gioco-lesbico.htm gioco lesbico] [http://rathchavady.freehostia.com/description/fotografia-artistica/ fotografia artistica] [http://eaes7.freehostia.com/lib/dark-tranquillity3.htm dark tranquillity monochromatic stains] [http://pticaja-ptica.freehostia.com/directory/valled-aosta.htm valled aosta] [http://midwestman.50webs.com/view/surround-singolo/ surround singolo] [http://midwestman.50webs.com/view/video-degli/ video degli slipknot] [http://vlano.50webs.com/styles/dmc-fzeg/ dmc fz5eg] [http://leshji.50webs.com/data/real-amateur/ real amateur] [http://njoka.freehostia.com/small/soggetti-smarriti.htm soggetti smarriti download] [http://eaes7.freehostia.com/library/ebay-portale.htm ebay portale] [http://vlano.50webs.com/styles/riccardo-di/ riccardo di poitiers] [http://celare.freehostia.com/description/holzmichel-midi/ holzmichel midi] [http://smfarrowik.angelfire.com/small/kit-vivavoce4/ kit vivavoce per auto nokia 6630] [http://commodore-guff.freehostia.com/styles/base-karaoke.htm base karaoke un corpo e un anima] [http://queenbabypie.freehostia.com/html/get-busy3/ get busy salsa] [http://blind9justice.50webs.com/paradiso-beach/ paradiso beach alan sorrenti] [http://krasniioktyabr.50webs.com/sex-pic/ sex pic] [http://keokepa.50webs.com/library/casse-z/ casse z3] [http://superhank.freehostia.com/content/obsessions/ obsessions] [http://queenbabypie.freehostia.com/html/cameretta-ponte/ cameretta ponte] [http://rathchavady.freehostia.com/description/sblocco-tel/ sblocco tel 3] [http://queenbabypie.freehostia.com/html/dvd-con19/ dvd con hdmi] [http://offleeewild1.50webs.com/library/neurochirurgia/ neurochirurgia] [http://raguerla.angelfire.com/articles/what-am/ what am i to you nora jones] [http://heartlessfriend.freehostia.com/library/si-salvi/ si salvi chi vuole] [http://anubis8.50webs.com/library/rs-mmc/ rs mmc memory card] [http://queenbabypie.freehostia.com/html/digitali-terrestri/ digitali terrestri] [http://eaes7.freehostia.com/library/novalac-as.htm novalac as] [http://eaes7.freehostia.com/library/batteria-motorola33.htm batteria motorola t2288] [http://midwestman.50webs.com/view/la-corruzione/ la corruzione] [http://pticaja-ptica.freehostia.com/directory/www-azmoon.htm www azmoon com] [http://someoddgalaxy.freehostia.com/articles/one-shot24/ one shot 80 vol 9] [http://vlano.50webs.com/styles/lg-dr/ lg dr 7900] [http://eaes7.freehostia.com/lib/milton-friedman.htm milton friedman] [http://keokepa.50webs.com/library/epson-c/ epson c66 photo] == Measured power usage ==
+
== Measured power usage ==
 
Measured with Kill-A-Watt, 119V input, tested with 720p output to LCD (not plugged in to wattmeter)<br>
 
Measured with Kill-A-Watt, 119V input, tested with 720p output to LCD (not plugged in to wattmeter)<br>
 
Note: These figures have also been confirmed with a 240V unit.
 
Note: These figures have also been confirmed with a 240V unit.

Latest revision as of 12:08, 23 September 2007

Measured power usage

Measured with Kill-A-Watt, 119V input, tested with 720p output to LCD (not plugged in to wattmeter)
Note: These figures have also been confirmed with a 240V unit.

  • Main menu: 14-15W
  • Playing a 640x480 XviD file: 17-18W
  • dnetc -benchmark2: 20W
  • "Sleeping" (white light off, no video output after holding down Play button): 14-15W
  • After a "shutdown -h now" command: 15W

Questions

  • Is there any way to further reduce power usage, e.g., disabling the graphics processor?
  • Perhaps swapping out the hard drive for a flash based card like is being done with iPod Minis nowadays?
  • What about a "Shutdown" frappliance that physically turned it off. (Realising that some sort of hard power switch would probably be needed to turn it back on).

Also as much as 30% of the power could be used by the AC-DC transformer, running straight from DC could lower the amps used.

pmset

  • Doing a pmset -g yields:
-bash-2.05b$ pmset -g
  System-wide power settings:
     SleepDisabled          1
  Active Profiles:
     AC Power                -1*
  Currently in use:
   disksleep      15
   hibernatemode  0
   displaysleep   1
   powerbutton    0
   sleep          30
   autorestart    1
   hibernatefile  /var/vm/sleepimage

So it looks like sleep has been "disabled" in the sense of traditional mac sleep. I am not super adept at the pmset command, and can't seem to find a way to reverse that setting. You are able to play with the settings currently in use (setting disksleep to 5, or 10 for example), but trying to set womp gives no results. A pmset -g cap gives you:

-bash-2.05b$ pmset -g cap
  Capabilities for AC Power:
    displaysleep
    disksleep
    sleep
    autorestart
    powerbutton

Additional, you can directly edit the file: /Library/Preferences/SystemConfiguration/com.apple.PowerManagement.plist. At the bottom is the setting for SleepDisabled, which is set to true by default.

Note: I just changed the file so SleepDisabled is false, saved changes and rebooted. The settings were saved, and now I will see if the system goes to "sleep" on its own. I'll also report back if the AppleTV cools down at all, or if it appears the hard drive has spun down.

I have tried SleepDisabled false, but I doesn't help. The consumption is always 14-15W when idle or "switched off".

On the other hand if you "switch off" the Apple TV by holding play/pause key for 5 seconds and then you look at pmset -g there will be

   disksleep      1
   displaysleep   1

while in normal state there are zeros. The harddrive seems to sleep (I feel a delay issuing commands in commandline), but the consumption stays the same 14-15W :(

Measurement Requests

  • Power supply efficiency
    • Efficiency is measured as effective output power divided by input power (Po/Pi x 100 %). Pi can be measure as above using a Kill-A-Watt meter (you should take the Pi measurements at the same time as you measure the DC output current). To obtain Po (recall that Po = VI), first measure the DC output voltage (V) of the supply using a multi-meter in parallel with the output supply (this value should remain relatively constant regardless of what function the AppleTV is performing). Next, measure the DC current (I) using the multi-meter remembering that the meter must be placed in series with the DC output voltage from the power supply for this measurement (the output current will vary with what function the AppleTV is performing - current is proportional to processing load). Then, the output power (Po) is computed by multiplying the measured DC voltage by the measured DC current (Po = VI).
  • The digital wattmeter I have can measure P and U*I. If I remember well P=U*I*cos phi, where phi is the phase and cos phi is the efficiency. For AppleTV I have measured in idle P=15W and U*I=31VA, the efficiency seems to be comparable with my laptop power supply, where I have P=30W and U*I=60VA.