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[Official] AMD Radeon HD 7950/7970/7990 Owners Thread - Page 345

post #3441 of 38721
well thanks to tsm106 knowledge im at 1225mv 1200mhz core/1375mhz memory 75% fan at a nice cool 51c working on memory now

oh and thats nice and stable in 3dmark06 45minutes occt with 1error and about an hour of playing bf3 gonna play with memory now and if i can get that to 1500 ill be happy and call it a pass.

ok i call it a pass.

http://www.techpowerup.com/gpuz/3vgmd/

18263 on 3dmark06
Edited by vedaire - 2/6/12 at 5:03pm
post #3442 of 38721
Quote:
Originally Posted by vedaire View Post

well thanks to tsm106 knowledge im at 1225mv 1200mhz core/1375mhz memory 75% fan at a nice cool 51c working on memory now
oh and thats nice and stable in 3dmark06 45minutes occt with 1error and about an hour of playing bf3 gonna play with memory now and if i can get that to 1500 ill be happy and call it a pass.
ok i call it a pass.
http://www.techpowerup.com/gpuz/3vgmd/
18263 on 3dmark06

I was gaming and put trixx to 1250 GPU voltage, 15min no artifacts then screen went completely dark and game no sound, after turn off pc motherboard bios decide to reset itself.

this is how gpu-z look right before dark screen, note that the "real" GPU voltage is actually 1.15v.

103
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post #3443 of 38721
I must not have a card with the greatest chip frown.gif

Flashed Asus test bios, loaded up Asus GPUTweak, maxed the voltage to 1.39v, did a run at 1300mhz and got 10900 in 3dmark. But had artifacts in OCCT.

Settled on 1250mhz 7000mem 1390mv. 10600 in 3dmark.

Way too much voltage to get 100% stable. But oh well, performance is great and blows my old 470 away.

Would like to give it more volts...since I threw my water block on since day one and the cards never seen above 45c maxed yet smile.gif



On another note, what's this horizontal screen tearing? normal for ATI cards?with vsync on or off. this is the first time ever using a non nvidia card in 15 years of computer building!
post #3444 of 38721
Quote:
Originally Posted by Evildemon View Post

tsm106 what do you recommend to test stability ?

I use a few apps.
Furmark for a couple minutes to "see" if the card will blow up or not, lol. It's also good at showing if the physical scaling is working on cfx setups.

Heaven, 3Dmark 11, Crysis bench and Metro bench. Each app stresses a different aspect and obviously a stable config in Heaven doesn't guarantee stability in 3Dmark so use the apps or games you use most.
Quote:
Originally Posted by donkel View Post

Its possible to give more Voltage as 1,3V for 7970 without hard vmod ??

It's not possible right now. And with no one doing any development on it, it doesn't look like we're going to be bypassing OVP anytime soon.
Quote:
Originally Posted by pioneerisloud View Post

So confused by your instructions tsm106. confused.gif
I downloaded that utility, and it doesn't work. Says ULPS isn't there. I can't get a very good overclock at all out of mine. I got 1225 stable with 1.22v once, but it took 100% fan speed. Any temp over 67*C and it would hard lock.
Even at a mere 1000Mhz it locks up randomly. I just gave up and put the stupid thing back to stock, yet to have a problem with it at stock.

Do you have a cfx setup? Regardless, you run it with admin rights after disabling your AV program and it will work.

You should decide on an app and run with it, either full on use AB or Trixx, etc. Don't use CCC at all if you use 3rd party overclocking.

Btw, what are your temps like at stock and stock auto fan, full load? Also, what is the asic leakage of your chip? I get the feeling its a low voltage chip?
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post #3445 of 38721
Quote:
Originally Posted by grandpatzer View Post

I was gaming and put trixx to 1250 GPU voltage, 15min no artifacts then screen went completely dark and game no sound, after turn off pc motherboard bios decide to reset itself.
this is how gpu-z look right before dark screen, note that the "real" GPU voltage is actually 1.15v.
103

Based on what I've read in this thread so far, it sounds like the maximum voltage increment on any 7970 is +0.125 V. This means that if you have a card with a stock VID of 1.05V, the maximum voltage you can set in AfterBurner/TRIXX is 1.175V. This is also why people with stock 1.175 VID cards have more success overclocking past 1200 MHz, as they have access to voltages up to 1.3 V.

As far as I can tell, the only way around this limitation is to flash to the unlocked ASUS BIOS or the BIOS from some other card with a stock VID of 1.175. I've contemplated doing this myself with my 1.05V card, but I'd rather see someone else's results before I go risking a $550 card with a BIOS flash smile.gif
post #3446 of 38721
Quote:
Originally Posted by grandpatzer View Post

I was gaming and put trixx to 1250 GPU voltage, 15min no artifacts then screen went completely dark and game no sound, after turn off pc motherboard bios decide to reset itself.
this is how gpu-z look right before dark screen, note that the "real" GPU voltage is actually 1.15v.
103

What's the asic of your card?
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post #3447 of 38721
Quote:
Originally Posted by frick View Post

Based on what I've read in this thread so far, it sounds like the maximum voltage increment on any 7970 is +0.125 V. This means that if you have a card with a stock VID of 1.05V, the maximum voltage you can set in AfterBurner/TRIXX is 1.175V. This is also why people with stock 1.175 VID cards have more success overclocking past 1200 MHz, as they have access to voltages up to 1.3 V.
As far as I can tell, the only way around this limitation is to flash to the unlocked ASUS BIOS or the BIOS from some other card with a stock VID of 1.175. I've contemplated doing this myself with my 1.05V card, but I'd rather see someone else's results before I go risking a $550 card with a BIOS flash smile.gif

But what do you mean by : "the maximum voltage you can set in AfterBurner/TRIXX is 1.175V" ?
My stock VID is 1.12 and i can give her 1.3, the problem is that its like the GPU cant stand so much voltage...
For example in my case i can get 1175mhz 0 errors on occt with 1.206v but after this i can give 1.28v that wont get more stability... In fact looks like the more voltage i give, the gpu gets more unstable
post #3448 of 38721
Quote:
Originally Posted by Evildemon View Post

But what do you mean by : "the maximum voltage you can set in AfterBurner/TRIXX is 1.175V" ?
My stock VID is 1.12 and i can give her 1.3, the problem is that its like the GPU cant stand so much voltage...
For example in my case i can get 1175mhz 0 errors on occt with 1.206v but after this i can give 1.28v that wont get more stability... In fact looks like the more voltage i give, the gpu gets more unstable

That's what she said...

You only think you can put and are putting that voltage thru but OVP won't let you add more than 125mv on top of whatever the base voltage is.
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post #3449 of 38721
Quote:
Originally Posted by tsm106 View Post

That's what she said...
You only think you can put and are putting that voltage thru but OVP won't let you add more than 125mv on top of whatever the base voltage is.

Oh so even if i put 1.28v its like i am setting 1.12v+0.125v ?
Damn need one of those bios :\
post #3450 of 38721
Quote:
Originally Posted by Evildemon View Post

Oh so even if i put 1.28v its like i am setting 1.12v+0.125v ?

Yea, unfortunately.

I'm also not sure where gpuz and Ab get the asic reading, from bios or not, but it's supposed to be reading the silicon... who knows?
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