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Good way to test stability on GPU overclock?

kissenger

kissenger

kissenger

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10 Apr 2008
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I'm currently overclocking my Asus GTX 570 DCII. I thought I had it completely stable at 1.063v/877Mhz/4000Mhz, but I started noticing the occasional artefact in Kombustor after about 9 minutes.

What I'm wondering is is there an ideal, simple, fast way to test for GPU stability? I've just bumped up the voltage on the card to 1.075 and I'm testing with Kombustor but it's not really practical to watch for tiny, infrequent artefacts for longer than a couple of minutes.
 
kissenger said:
How long should I test with this programme? Is 10 minutes enough? Also, I suppose I'll need to manually watch for artefacts?
Click to expand...

are you going to play games for 10 minutes at a time?

test it for roughly how long you're likely to play for, should give you a decent idea of stability then.
 
kissenger said:
How long should I test with this programme? Is 10 minutes enough? Also, I suppose I'll need to manually watch for artefacts?
Click to expand...


Let it run for an hour, if a problem hasn't occurred by then, then there shouldn't be too many problems. You can watch for artefacts manually also.
 
Ran Kombustor for just over 10 minutes. Not a single artefact. Then I played some games and had no problems. I think I'm stable, but we'll see.

I settled on 1.075v/877MHz core/4000MHz memory. I noticed a performance increase of around 10% in-game. Temps never went over 60C even at 99% usage in Kombustor.
 
Play games bro. It is what you bought it for. If it crashes to desktop / system, step back! I have ran benchmarks but never stability tests... and my OC is stable as hell. TBH if you get to a point where you want an extra 5-10fps for an OC, time to upgrade ;)
 
Locky said:
Furmark is ok, The best test is hours of gaming (ie battlefield)
Click to expand...

This. After reviewing loads of cards and using Furmark/Kombustor to test overclocks, gaming is where instability became more apparent. A card could last hours on Furmark without issues but fail after 10-20 mins of gaming. BC2 was very sensitive to unstable overclocks I found.
 
Generally speaking, games and these stress test application stress the graphic card differently.

What I do find is if I can get my overclock stable in Crysis, it will stable in pretty much everything else (and yes, Crysis require a relatively lower core clock to stable than stress testing application, so in a way it is more of a sure bet).
 
just run furmark untill the temp levels out , that should more or less do . play games and if you get a crash check temps and if there fine up the voltage . basicaly heat is the killer , if you can manage the heat then you will not damage your card
hope that helps .
 
Just use your games with the highest settings theyre capable off. Things like furmark can run for ages without issue. But fire up a game and it could crash in minutes. Ive often found this with memory overclocks, as furmark doesnt really stress memory. I had a gtx 280 that ran fine in furmark, a few minutes into a game of grid, and it artefacted like crazy. Memory on the card was faulty.
 
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