1. #1
    Veteran Onion
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    Best software for testing GPU overclock stability

    Looking to see if my 6870 can overclock or not. What's the best utilities for testing stability?

    Doing a quick google search showed up something called MSI Kombustor but I've never heard of it, wondered if anyone here has any experience?

    If not, what else? Is it worth just running something like 3DMark 11 or the Heaven Unigine benchmark to ensure I get no artifacts / instability?

    Cheers.

  2. #2
    Master Onion
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    Quote Originally posted by addyadamson View Post
    Looking to see if my 6870 can overclock or not. What's the best utilities for testing stability?

    Doing a quick google search showed up something called MSI Kombustor but I've never heard of it, wondered if anyone here has any experience?

    If not, what else? Is it worth just running something like 3DMark 11 or the Heaven Unigine benchmark to ensure I get no artifacts / instability?

    Cheers.
    Personally I use a mix. I start with 3-5 loops of 3dmark 11, if I run into problems then I fine tune with kombuster.

  3. #3
    Veteran Onion
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    Cheers, will take a look at kombuster then.

    It's been years since I did any overclocking and benching, probably something like 7 or 8 years since did any seriously.

    Nice to be trying it again and nice to finally have a setup I can rate as 'decent' (in my opinion anyway lol)

  4. #4
    Senior Onion
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    Furmark exposes weaknesses pretty fast, been using it for a few years now

  5. #5
    Futuremark Staff
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    Quote Originally posted by Alvie1981 View Post
    Furmark exposes weaknesses pretty fast, been using it for a few years now
    Problem with Furmark is that it stresses only one part of the GPU (the shaders). Granted, that's the most common source of image corruption, but still.

    3DMark 11 Combined Test is fairly good as stability test since it maxes out both CPU and GPU (uncovering any power supply issues with the overclock... so common to see cases where GPU-only stress tests go just fine but when gaming you get spontaneous reboots... because the PSU can't handle the added power drain from the OC when both processor and GPU are stressed simultaneously)

  6. #6
    Junior Proxycon Emperor
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    I've found the Unigine Haven is excellent for producing overclocking artifacts. Red coronas everywhere.

  7. #7
    Emperor Apprentice
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    Quote Originally posted by Alvie1981 View Post
    Furmark exposes weaknesses pretty fast, been using it for a few years now
    The problem with Furmark, and because it is so stressful, some cards will throttle down when they detect it, so it's not always running 100% anymore (unless it's renamed or disabled in the driver profiles etc)

    But yeah I'd also say Unigine Heaven is a good all round stability test, whack the tessellation level up to extreme, and let it loop for 15-20mins or so.

  8. #8
    Firefly
    Joined
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    I use the MSI Afterburner + Kombustor - combo.

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