Topic: How to undervolt 7950 vapor-x OC on linux (Read 4915 times)
Hi,
Bios flash? I am using Sapphire VaporX 11196-09-40G and there is only 1 available bios for this GPU V49_V4A.
Have you a modified version of the bios? I how that for the Gigabyte there is the F43 that is working very good.
Have you installed the Gigabyte bios on the Sapphire card?
At the moment I haven't been able to modifie the voltage on this cards (Trixx, Afterburner in win and amdOveridervoltage in xubuntu/ubuntu). If I go on a high level configuration it goes to 1.250V, even if from the various topics it uses only 1.115 or 1.150...
I am not energy efficient at the moment...
Looking forword to your imput
I have tried:
win 7 - 64 biti:
- driver 12.8 / 13.1 / 13.4 (and all the available betas from 12.8 up)
- SDK form 2.4 up
xubuntu/ubuntu: 12.10 and 13.4 systems
the same drivers...
Bios flash? I am using Sapphire VaporX 11196-09-40G and there is only 1 available bios for this GPU V49_V4A.
Have you a modified version of the bios? I how that for the Gigabyte there is the F43 that is working very good.
Have you installed the Gigabyte bios on the Sapphire card?
At the moment I haven't been able to modifie the voltage on this cards (Trixx, Afterburner in win and amdOveridervoltage in xubuntu/ubuntu). If I go on a high level configuration it goes to 1.250V, even if from the various topics it uses only 1.115 or 1.150...
I am not energy efficient at the moment...
Looking forword to your imput
I have tried:
win 7 - 64 biti:
- driver 12.8 / 13.1 / 13.4 (and all the available betas from 12.8 up)
- SDK form 2.4 up
xubuntu/ubuntu: 12.10 and 13.4 systems
the same drivers...
BIOS flash.
Ok thanks
Well if you cannot do it with the cgminer switches (--gpu-vddc) most probably you are out of luck. Also try another driver version.
If both don't work Windows is the way to go. Afterburner and Trixx will do it.
I don't think that you can undervolt a lot though with your current config (most probably 1.10)
If both don't work Windows is the way to go. Afterburner and Trixx will do it.
I don't think that you can undervolt a lot though with your current config (most probably 1.10)
Hi everyone,
I just finished to configure a 3x 7950 sapphire vapor-x OC edition.
It runs very well at 1920kh/s on xubuntu and it takes 800watt from the wall.
But I want to improve the energy efficiency.
First I have auto-fan with a target temp at 75C on CGminer.
Second, I try to undervolt with CGminer, but the command doesn't change the voltage.
Current config : Engine: 1080 Mem: 1500 volt: 1.15
I read a few things on how to undervolt vapor-x on windows, but does someone know how to do it on xubuntu ?
Thanks a lot.
I just finished to configure a 3x 7950 sapphire vapor-x OC edition.
It runs very well at 1920kh/s on xubuntu and it takes 800watt from the wall.
But I want to improve the energy efficiency.
First I have auto-fan with a target temp at 75C on CGminer.
Second, I try to undervolt with CGminer, but the command doesn't change the voltage.
Current config : Engine: 1080 Mem: 1500 volt: 1.15
I read a few things on how to undervolt vapor-x on windows, but does someone know how to do it on xubuntu ?
Thanks a lot.
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