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1 hour of furmark and still stable. Good OC? - Page 5

post #41 of 47
Thread Starter 
Quote:
Originally Posted by jdmfish;11992979 
Depends on the tests being used.. I have googled around and come to a conclusion, based on what I've read through various forums:

20-25 minutes on Furmark (or similer [OC Scanner, Kombuster, etc.]). I'd probably use ~30 minutes for any other test being used, depending on how hard it is on the gpu.

I plan on about 30 minutes with OCCT and 20 minutes with Furmark (with many options selected).

Well with furmark I made it an hour with no visible artifacts at much higher settings but with OCCT I can't go a few minutes.
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post #42 of 47
Quote:
Originally Posted by PCnooob View Post
Well with furmark I made it an hour with no visible artifacts at much higher settings but with OCCT I can't go a few minutes.

Well Furmark can put a higher load on the gpu, I think. And OCCT may be using different test material/scanners/etc. or whatever they use..
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post #43 of 47
Thread Starter 
Dropped core down to 845 and memory at 1801 was 0 errors for 10 minutes at 84C and then my screen went to sleep and it gave me 2000+ errors. Then kept running a couple minutes and no more errors. I'll make sure I turn sleep mode off next time. I'll have to leave it til tomorrow though cause it's my bedtime. Thanks again for everybodys help. Rep + for everybody, tomorrow, Good night.
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post #44 of 47
Def looks as though it was your mem. After you get it to where there are no errors at that voltage, start lowering the voltage until you get errors again. That way you arent running excessive Vcore for no reason.
 
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post #45 of 47
Well, honestly I find that there is no way of rushing a gaming stable gpu oc. Many a time I have found an oc to be stable in every synthetic and non-synthetic benchmark available, only to find that it wont hold up in real life gaming. Imo furmark primarly checks for temperature tolerance in itself, so use that as a "max temp" reference.

For testing gaming stability the free Call of Pripyat bench is pretty good, and it also produce a lot of heat (most of them all in my experience), but even better: fire up Crysis and play that at high settings for about an hour. If it holds up I would say you are pretty much ok. Nothing beats actual gaming in terms of stressing your entire system, and remember that heat from other stressed components may create additional temperatures on your gpu (which does not happen while doing synthetic benches).

Personally I like to stability test in worst case scenarios, more specifically while my room is as hot as it gets and while its badly ventilated (no windows open etc.). If I get acceptable temps (and for me that is up to 83c on my gtx570 -stock cooler) under these conditions, I feel comfortable that the oc will be stable through all seasons and situations. PS: Ironically, I find that temperatures are better during spring, summer and fall as I ventilate more.

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post #46 of 47
Quote:
Originally Posted by hyujmn View Post
Also, OCCT got a lot hotter than Furmark did. I was up to 78c in about a minute with lower overclocks, where as with Furmark, I never got above 71c with higher overclocks and about an hour and a half of running it.
AA disables PostFX, so no AA is usually the hottest setting on FurMark.

Quote:
Originally Posted by theonedub View Post
Probably needs more Vcore, I would also guess you were a little too aggressive on your mem clock. Try shader complexity 8 (default is 0) and see what your error count looks like
Higher is more stressful on my ATI cards, but on most of my NVIDIA cards 2-4 produces the highest temps and errors at the lowest clocks.

Quote:
Originally Posted by PCnooob View Post
F@H? And what's a WU? But I ran using shader at 8 instead of 0 and still got a bunch of errors, less though.
Try 2-4. 8 is less stressful on the GF100. I figure it puts too much load on the shaders when they are already a bottleneck for the rest of the card, lowering overall load.

Quote:
Originally Posted by jdmfish View Post
Well Furmark can put a higher load on the gpu, I think. And OCCT may be using different test material/scanners/etc. or whatever they use..
FurMark doesn't put more of a load on the GPU. It's about equal on NVIDIA cards and definitely less strenuous than OCCT on most ATI cards.

Also, FurMark doesn't have any artifact scanner at all, and is not a static image, so by the time you actually see a problem, you are already way into unstable territory.
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post #47 of 47
Quote:
Originally Posted by Blameless View Post
AA disables PostFX, so no AA is usually the hottest setting on FurMark.
AA = MSAA, correct?

Quote:
Originally Posted by Blameless View Post
FurMark doesn't put more of a load on the GPU. It's about equal on NVIDIA cards and definitely less strenuous than OCCT on most ATI cards.
Why is it that FurMark on "xtreme burning mode" produces considerably more amount of heat, than say OCCT? Wouldn't that be like - more load = more heat type of thing?
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