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[Official] AMD Radeon HD 7950/7970/7990 Owners Thread - Page 1172

post #11711 of 38704
Quote:
Originally Posted by SonDa5 View Post

Yes the card can go faster but for the test 1200mhz OC is enough.
I will push it more once it is water cooled. 110C on VRM seems awfully toasty.

Try a more realistic scenario instead of furmark... Run heaven for an hr at least..

Furmark dont do no good for your card other than to stress the crap out with an unrealistic payload, same method as PRIME/IBT on cpus but not as efficient...

Furmark has proven not to detect a bad overclock either... It will crash if is a extreme overclock other than that no good to check a good overclock that needs to be adjusted by a little..


In the other hand PRIME/IBT are good for testing overclocks specially IBT..

I was testing my card yesterdy and today and with LI power at 0 and stock voltages i can do 1225/1800... I will sacrifice a couple of mhz on the memory to lower my temps as i dont see the need of that much i think 1600 will do just fine, dont see a significant increase of performance with 300mhz extra on them..

You dont buy and watercool a vidcard to run furmark on it, it is good just for testing some configurations other than that it is useless..

I will do a loop of furmark if i spent alot of money on a water cooling setup to be honest, but realistic talking no game is going to put that huge amount directly to burn your card like furmark does...
Edited by zGunBLADEz - 6/8/12 at 8:12am
post #11712 of 38704
Quote:
Originally Posted by Andrazh View Post

No only when OC. Did i hit the wall?

Maybe. But if you are overclocking you should have a custom fan profile too, temps could be an issue. Up the fan speed to 70% and try again.
post #11713 of 38704
Quote:
Originally Posted by Newbie2009 View Post

Maybe. But if you are overclocking you should have a custom fan profile too, temps could be an issue. Up the fan speed to 70% and try again.

My temps are <65°C at all times
post #11714 of 38704
Quote:
Originally Posted by zGunBLADEz View Post

Try a more realistic scenario instead of furmark... Run heaven for an hr at least..
Furmark dont do no good for your card other than to stress the crap out with an unrealistic payload, same method as PRIME/IBT on cpus but not as efficient...
Furmark has proven not to detect a bad overclock either... It will crash if is a extreme overclock other than that no good to check a good overclock that needs to be adjusted by a little..
In the other hand PRIME/IBT are good for testing overclocks specially IBT..
I was testing my card yesterdy and today and with LI power at 0 and stock voltages i can do 1225/1800... I will sacrifice a couple of mhz on the memory to lower my temps as i dont see the need of that much i think 1600 will do just fine, dont see a significant increase of performance with 300mhz extra on them..
You dont buy and watercool a vidcard to run furmark on it, it is good just for testing some configurations other than that it is useless..
I will do a loop of furmark if i spent alot of money on a water cooling setup to be honest, but realistic talking no game is going to put that huge amount directly to burn your card like furmark does...

I agree partially, but running heaven for an hr is the same bullocks imo...
You can pass heaven for 2 hours easily with a certain overclock but crash after 30 min in some heavy game like crysis or BF3.
Heaven just doesnt do enough stress on your GPU compared to some games I feel. While Furmark is the other way around.
For me OCCT running 10 minutes is the best way to see if my overclock is stable. Just my 2 cents and experience when trying to overclock my card wink.gif
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post #11715 of 38704
Quote:
Originally Posted by Andrazh View Post

My temps are <65°C at all times

When I was overclocking on air, I used to try keep them under 62c, would artifact above that.

What volts are you using for what clocks? Do you have powertune to +20?
post #11716 of 38704
Double post, pls delete
post #11717 of 38704
If you have 2 or more 7970's/680's there's absolutely no need to get stable overclocks at all. Stock speed will easily get you 60+fos constant in any game. I only over clock at all for benchmark scores. I run games at stock...
post #11718 of 38704
@daffle, when i refer to heaven was for heat test..

I will prefer crysis 1 or 2 for stability on an overclock.. Oh my how picky this game is with overclocks lol...
post #11719 of 38704
BF3 is the king of stability testing imo. I can run Crysis 2 and Furmark all day at 1250, but BF3 will crash. Had to drop it down to 1225. Really wish there was a benchmark program for BF3 like Crysis 2.
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post #11720 of 38704
Quote:
Originally Posted by Newbie2009 View Post

When I was overclocking on air, I used to try keep them under 62c, would artifact above that.
What volts are you using for what clocks? Do you have powertune to +20?

I had the same card before it could do 1180 with no problem. 1210 on unigine.

1)Now i had to rma it. And i wanted to get to 1170 with this one. I tried 0, 10, 20% powertune. And voltage from 1100 to 1250mV. It's just not stable. In 3dmark11 i get smal little black squares and if i don't quit 3dmark the comp freezes.

2)Sometimes with higher OC i get vertical grey lines all over the screen.

The first problem is probably due to weaker chip. I guess i just can't get over 1150Mhz. I want confirmation anyways.

I don't have a clue about second one.
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