Results 1 to 4 of 4

Thread: AMD-ATI zerocore

Hybrid View

  1. #1
    Join Date
    Mar 2009
    Posts
    2

    Default AMD-ATI zerocore

    Hi all,

    I'm very interested in 7000 series feature called "zerocore" which puts the card in a sort of standby mode when screen goes blank.

    I have note been able to find any input regarding zerocore support under linux runing FGLRX.

    Does anyone has information about zerocore support under GNU/linux?

    Any help would be much appreciated!

    Thanks

  2. #2
    Join Date
    Sep 2012
    Posts
    9

    Default

    just testet it on hd7750 and fglrx 12.9 ,ubuntu 12.04, ASPM on

    with code: "xset dpms force off"

    whole computer measured:
    idle: around 43W
    idle monitor off: around 42W

    dont know if that 1W accounts to zerocore or something else related
    aspm activated did lower it around 6W in idle though

    http://en.wikipedia.org/wiki/Active_...wer_Management

  3. #3
    Join Date
    Apr 2010
    Posts
    1,946

    Default

    Power up your machine. Put it into lowest power state as you can. Measure it.
    Reboot, set in BIOS/UEFI - continue on all errors.

    Open the machine, remove GPU completely. Reboot. If it boots till sound, measure - thats raw performance without GPU.
    It doesn´t play any role if Xorg was started or no, main point is cpu-governor should start and that happens if kernel and init system work.

    You can make a daemon to create some random file at end of the boot as confirmation that machine did boot.

  4. #4
    Join Date
    Sep 2012
    Posts
    9

    Default

    the hd7750 idles around 5W
    http://www.techpowerup.com/reviews/ASUS/HD_7750/24.html

    zerocore reduces that to 3W
    http://www.legitreviews.com/article/1805/13/

    so my 1W less finding may be the zerocore deepest state cause they used an active cooler version there(+1W?) an i have a passive card.
    but doas it matter?
    0,002kW*24h*365d*0,25cent/kWh=4,38€ /year difference if its idle all the time

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •