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post #13261 of 38701
Still voltage drop, with +20 too.
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post #13262 of 38701
I need little help stabilizing my overclock. I have GPU @1000Mhz with 1049mV, it seems stable when Im gaming/do other stuff/everyday stuff but when I start to game it crashes.
Example: Diablo 3, I start game, loading screen comes, then I see the world and game freezes but my mouse moves, then I press Ctrl+Alt+Del to get to the desktop where it says 'Graphic card has stopped working'.
This doesnt happen all the time, I've tried to up the voltage up to 1100mV but it didn't help in this at all, only raised my temps.
I've kept memory on stock clocks (@1250Mhz), because I though it was it but it wasnt. I've also tried to OC it too, but it didn't help to solve this problem.



Any help here?

Im using Catalyst 12.6 WHQL and AB 2.2.2, I've tried to change different drivers and Afterburner, but they didnt help at all.
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post #13263 of 38701
Quote:
Originally Posted by KaRLiToS View Post

Still voltage drop, with +20 too.

Take the two xfx cards out and just test the power color cards for the voltage issue. Then, repeat the test with just the xfx cards and report your results.
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post #13264 of 38701
Quote:
Originally Posted by KaRLiToS View Post

I use AIDA64 latest version to monitor my hardware, its one of the best Monitoring software.
If I OC the cards and use a voltage of 1.225v. The Idle voltage will be 1.212v and as soon as I put 100% load, it drops to 1.162v like you asked.
I just tested it using that voltage. What can it be? Do I have to use Power Tune (Or Board Power Li in Trixx) ?
Thanks for your help Brad

It's vdroop and there's nothing you can do about it since there's no llc on the gpu. You can physically mod to compensate for vdroop but that's typically too extreme for most. Give it more juice.


FYI, no one is actually running with the voltage that they input, no one.
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post #13265 of 38701
Quote:
Originally Posted by tsm106 View Post

It's vdroop and there's nothing you can do about it since there's no llc on the gpu. You can physically mod to compensate for vdroop but that's typically too extreme for most. Give it more juice.
FYI, no one is actually running with the voltage that they input, no one.
Whatever voltage he sets, he keep at 1.16v. That is not vdroop.
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post #13266 of 38701
Quote:
Originally Posted by tsm106 View Post

It's vdroop and there's nothing you can do about it since there's no llc on the gpu. You can physically mod to compensate for vdroop but that's typically too extreme for most. Give it more juice.
FYI, no one is actually running with the voltage that they input, no one.

I remember with my 6970 (3 x 6970) they didnt have any voltage drop. When they were under load, they kept their set voltage.

But now, with my 7970s, If the idle voltage is 1.164v, when its under load, it drop at 1.12v

If I set the voltage in Trixx at 1.225v, idles will be at 1.21v and load at 1.15v

So even idle, the voltage is already lower, and the drop under load is kind of big in my opinion. Especially if I compare it to my 6970s when there was no drop at all.

I just want to know if its normal, I can't find any information on google about "power tune" or "board power Li". But even adding +20 doesn't seem to help the drop.
Quote:
Originally Posted by BradleyW View Post

Take the two xfx cards out and just test the power color cards for the voltage issue. Then, repeat the test with just the xfx cards and report your results.

I tried it, no difference, the idle voltage and load voltage are always lower than what I set it.
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post #13267 of 38701
Quote:
Originally Posted by KaRLiToS View Post

I remember with my 6970 (3 x 6970) they didnt have any voltage drop. When they were under load, they kept their set voltage.
But now, with my 7970s, If the idle voltage is 1.164v, when its under load, it drop at 1.12v
If I set the voltage in Trixx at 1.225v, idles will be at 1.21v and load at 1.15v
So even idle, the voltage is already lower, and the drop under load is kind of big in my opinion. Especially if I compare it to my 6970s when there was no drop at all.
I just want to know if its normal, I can't find any information on google about "power tune" or "board power Li". But even adding +20 doesn't seem to help the drop.
I tried it, no difference, the idle voltage and load voltage are always lower than what I set it.

What asic % is your card? What are you using to read real voltage? Btw, 6970s had vdroop as well, it just wasn't being reported. The reality is that all processors have vdroop. wink.gif


Powertune DOES NOT add voltage. It controls/limits the amount of power the card can draw. Raise Powertune to raise the TDP limit, so that the card does not throttle the fun when you are overclocking.
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post #13268 of 38701
If you set 1.25vcore, what is your full load voltage?
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post #13269 of 38701
Quote:
Originally Posted by tsm106 View Post

What asic % is your card? What are you using to read real voltage? Btw, 6970s had vdroop as well, it just wasn't being reported. The reality is that all processors have vdroop. wink.gif
Powertune DOES NOT add voltage. It controls/limits the amount of power the card can draw. Raise Powertune to raise the TDP limit, so that the card does not throttle the fun when you are overclocking.

The XFX have 74% ASIC and the powercolor has 69%. So it explains everything. Just wanted to be free of mind.
At 1200Mhz Core and 1625Mhz Memory, my temps max out at 43'C .
Quote:
Originally Posted by BradleyW View Post

If you set 1.25vcore, what is your full load voltage?

At 1.25v, it idles at 1.225v and load at 1.19v.


And I get enormous Coil Whine. I will have to fix that issue IF its possible (not).


And by the way guys, I want to know how to reach a stable overclock with that much video cards? Should I overclock them individually first . Like overclock one and keep the other at stock and then stress test like this. Or I will get scaling issues with the other cards at stock clock and one overclocked. Any Suggestions?

I appreciate your help guys, much better than googling all around.
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post #13270 of 38701
Overclock them all at once and you will find your limit for all 4 cards collectivly. Don't run the cards at seperate speeds as it can cause scaling issues.
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