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Power Upgrades Hardware

Fujitsu To Show Off "Zero-Watt" PC At CeBIT 222

Posted by timothy
from the car's-mpg-is-infinite-while-engine's-stopped dept.
mobile writes "In August of last year Fujitsu announced new 'zero-watt' displays. This means the screens use absolutely no power when put into standby mode, unlike most other screens that use less than 1 watt, but still require some power. Now Fujitsu has announced they will be showing a zero-watt PC later this year at the CeBIT show. The PC is called the Esprimo Green and marks a first, in that it's able to use no power while in standby mode — but this is a feature that will be required from 2010 for new PCs released across Europe."
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Fujitsu To Show Off "Zero-Watt" PC At CeBIT

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  • Standby? (Score:4, Informative)

    by arth1 (260657) on Wednesday January 21, 2009 @06:52PM (#26553381) Homepage Journal

    How would you know whether the device is in standby or turned off? Normally an LED signifies this.
    Perhaps a mechanical indicator? Or, e-ink?

  • Re:Define "Standby" (Score:5, Informative)

    by RollingThunder (88952) on Wednesday January 21, 2009 @07:09PM (#26553617)

    No the summary says they introduced zero watt displays LAST YEAR. The new thing that's going to be introduced is a zero-watt PC.

  • Re:A "First"? (Score:3, Informative)

    by Sycraft-fu (314770) on Wednesday January 21, 2009 @08:00PM (#26554223)

    They are also good to use since in some designs they leave the chassis ground connected. So you can cut power, but keep the case grounded (that's what it's grounded through) and then ground yourself to that by touching it. No static zap.

  • by nmoore (22729) on Wednesday January 21, 2009 @09:22PM (#26554957) Homepage

    You're right. According to that document (p. 4, about halfway down), the machine draws 1.6 to 2.7 W (depending on model) in standby; 1.5 to 2.1 W in soft-off with wake-on-LAN enabled; and no power in soft-off with wake-on-LAN disabled ("wake up power button only"). So the article is simply wrong when it says the computer is "able to use no power while in standby mode", unless they're redefining "standby" to mean S5 rather than S3.

    It may simply be that, when WOL is disabled, shutting down the machine puts it into "mechanical off" rather than "soft off"—just like in pre-ATX PCs.

  • Re:Let's get real (Score:4, Informative)

    by Ancient_Hacker (751168) on Wednesday January 21, 2009 @09:46PM (#26555197)

    >It can be. The "wake-up" signal that the net, Wi-Fi, or Bluetooth gives it could give it enough power to switch it back on.

    Nice try, but no.

    Twisted-pair Ethernet requires 2-way signalng, at about 1 volt across 200 ohms, 5 milliamps, 5 milliwatts. It's mighty hard to run a 100MBPS modem and ethernet frame detector on 5 milliwatts AND send 5 milliwatts back all the time.

    Wi-fi and bluetooth deliver picowatts at best. Not enough to power the receivers.

  • Re:Define "Standby" (Score:4, Informative)

    by Yokaze (70883) on Thursday January 22, 2009 @03:58AM (#26557363)

    Buy, a router-HDD-WLAN combo for $180 top (can't get more expensive than the AirPort Extreme) or use a old notebook for that (which can also do audio and may cost nothing). Either one will consume about 20W (including additional HD for file-storage) instead of the 40W your computer is going to consume the least. The 40W does not account for an gaming capable graphic-cards or processor, in which case your computer easily consumes 100W-140W idle.
    Assuming, that the computer consumes 100W 8h per day and 25cents per kWh, it translates to $160 saving per year.

  • Re:Define "Standby" (Score:1, Informative)

    by Anonymous Coward on Thursday January 22, 2009 @04:37AM (#26557523)
    I only shower with pee.
    what's that look? oh, right, wrong forum, back to 4chan

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