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7950 Voltage problems need help.

Soldato
Joined
16 Dec 2005
Posts
4,054
Location
Halifax W'Yorkshire
Hey there, I run my 7950's at 1125/1450, iv decided to overclock them further.

Iv decided to volt them up a bit and see how far I can push them but... last night I decided to monitor the volts for the first time, and they both run at 1.138v, and iv noticed in afterburner its set at 0.950, so they are ignoring that slider, power is @ +20. and iv monitored them in gpuz they run at 1.138v?...
I moved the slider up to 1.2v in afterburner, and they go up to 1.2v for about 1 second before returning to 1.138v all the time in games, and they power down to 0.8v idle.

So iv downloaded trixx and I put the volts up, did nothing. unless I click force constant voltage in the settings page, then I can keep them at 1.2v all the time... But they never power down if I click that option when idle, And also that's no good volting them up in trixx because I overclock in afterburner all my profiles, fan settings, on screen displays etc are set up in afterburner.

So any idea whats going on here guys?

Also, another spin off is that my gpu2 sometimes is at higher than 1.138v it sometimes but rarely goes to the voltage that I set in afterburner, so im maybe thinking that my gpu1 is voltage locked? Though they are identical cards both Tahiti etc, my gpu1 is Hynix memory, gpu2 is Elpida, so im guessing they aren't as identical as I think but with stock volts they both clock identical

Thanks

Edit: Memory voltage does nothing on each cards either but as stock, gpu1 runs at 1.5v memory, and gpu2 1.6v memory

Edit2: Iv just noticed the force constant voltage setting in afterburner, that works to constantly keep them volted up, but is useless because they never power down when idle :/

Edit3: Iv just set everything back to my old overclock with stock volts, and im monitoring gpu2, and its voltage is 1.178, its as if the voltages of that aren't taking notice of anything at all. so is gpu1 locked and gpu2 unlocked then?
 
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Which brand, model and revision are they?
Some cards are voltage locked but some you can "fix" with a new bios.

Did you disable ULPS? (do you know what am I talking about? :D)
 
Which brand, model and revision are they?
Some cards are voltage locked but some you can "fix" with a new bios.

Did you disable ULPS? (do you know what am I talking about? :D)

Sapphire Vapor-X both of them, iv tried editing the bios for anything to do with voltages, and all that's in there is total power consumption which they both are set to 220W limit.

Yes, iv tried ulps disabled and enabled, no difference, but I like to have ulps enabled anyway, but even when disabled, no difference I can only change the voltages by forcing constant voltage but then the voltages doesn't go down when idle.

Both of the bios settings for each card are identical and gpu-z everything looks the same apart from gpu bios 1 is:
015.025.000.099.000000 (113-210P2HY-V08)
gpu2 is

015.025.000.099.000000 (113-210PBBBG-V08)
I tried using gpu 2's bios on gpu1 incase gpu2 was unlocked and it wouldn't work with it.

Iv tried in afterburner on all Unofficial overclocking modes and nothing, and voltage settings to reference, standard msi and extended msi.

Don't know what to do now lol.

What im trying to do is simply set both gpu's voltages to what ever I put them, then power down in idle, but they aren't having any of it, and like I say the only way for them to actually volt to what I set is by forcing constant voltage which is no good because they are hot at idle.


EDIT: OMFG, what a absolute NOOOBazor. iv found the voltages in the bios, UHHHHHHHHHHH IceShock.. Fail of the year award goes to me. ill just edit the voltages in the bios, then report back, will have to do it tomorrow though going out to a bonfire party soon.
 
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