Hi all,

Here's an error I have received after running this work unit overnight.

http://www.gpugrid.net/result.php?resultid=16301823

I do not know what has caused this... Is this an issue with anyone else?
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Cruncher/Learner in progress.

It happens all the time if your card is overclocked.

From the error message it seems that the card runs at pretty normal parameters... as this one is an EVGA ACX 2.0 OC and therefore overclocked ex factory. So I don't see anything special in this regard.
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I would love to see HCF1 protein folding and interaction simulations to help my little boy... someday.

Factory overclocked is overclocked. It may work for games, but not for the harder GPUGrid work units.

Any way I can downclock for the project? And increase back for my games?
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Cruncher/Learner in progress.

I use Nvidia Inspector 1.9.7.3, though the 1.9.7.6 versions had problems.
Here is the latest, but I haven't tried it.
http://www.majorgeeks.com/files/details/nvidia_inspector.html

A fairly safe bet is MSIAfterburner, which works on both AMD and Nvidia and a lot of people use it.

I think either of them can set the clock permanently so that it survives a reboot, or you can remove the clock when you want to, but I have not used them for a while.

Factory overclocked is overclocked. It may work for games, but not for the harder GPUGrid work units.

Factory overclocked is overclocked. It may work for games, but not for the harder GPUGrid work units.

I have never had any error on my factory overclocked Palit Super Jetstream gtx1070. The conclusion {OC => calculation error} does not sound logical to me anyway. Half of the GPUGRID crunchers would have permanent failures in that case.

Half of the GPUGRID crunchers would have permanent failures in that case.

Guys, factory overclocks aren't always stable to begin with. Then, on top of that, when new drivers come out, with optimizations that make portions of the GPU hardware work harder (to perform better) than prior drivers, that too can make an overclock become unstable.

I recommend using GPU-Z, and looking at the "Graphics Card" tab, and look at "GPU Clock", and compare against the URLs below, looking at "Base Core Clock (MHz)", to see how overclocked you are:
https://en.wikipedia.org/wiki/GeForce_10_series
https://en.wikipedia.org/wiki/GeForce_900_series
https://en.wikipedia.org/wiki/List_of_Nvidia_graphics_processing_units

I recommend MSI Afterburner for controlling the GPU Core Clock offset.

I recommend the following test to determine if your GPU clock is stable:
- Download the latest PrimeGrid Genefer OpenCL app
(One version is: http://www.primegrid.com/download/primegrid_genefer_3_3_1_3.13_windows_intelx86__OCLcudaGFNWR.exe)
- Open a Command Prompt window
- Run with the following arguments, including the double quotes:
primegrid_genefer_3_3_1_3.13_windows_intelx86__OCLcudaGFNWR.exe -q "43322502^131072+1" -d 0
- If the application completes successfully with a .log file that has "is composite. (RES=" in it, then you are short-term-stable.
- If you want to run on a different GPU, change the -d parameter
- Another good test is to swap out that number in double-quotes, with this number: "43370168^131072+1"
- You could create a .bat file, to run it overnight, to ensure better stability. Details here:
http://www.gpugrid.net/forum_thread.php?id=4310&nowrap=true#43617

As an example of how I've had to adjust my factory-overclocked GPUs for complete stability at maximum stable clock, my GPUs are:
eVGA GTX 980 Ti FTW: -70 MHz
Dell GTX 980 Ti: +105 MHz
eVGA GTX 660 Ti 3GB FTW: -52 MHz
MSI GTX 660 Ti TwinFrozr III OC 3GB: +40 MHz
eVGA GTX 970 4GB FTW: -10 MHz

eVGA is NOTORIOUS for factory-overclocking too high, from my examples.

Fun!

Guys, factory overclocks aren't always stable to begin with. Then, on top of that, when new drivers come out, with optimizations that make portions of the GPU hardware work harder (to perform better) than prior drivers, that too can make an overclock become unstable.

I recommend using GPU-Z, and looking at the "Graphics Card" tab, and look at "GPU Clock", and compare against the URLs below, looking at "Base Core Clock (MHz)", to see how overclocked you are:
https://en.wikipedia.org/wiki/GeForce_10_series
https://en.wikipedia.org/wiki/GeForce_900_series
https://en.wikipedia.org/wiki/List_of_Nvidia_graphics_processing_units

I recommend MSI Afterburner for controlling the GPU Core Clock offset.

I recommend the following test to determine if your GPU clock is stable:
- Download the latest PrimeGrid Genefer OpenCL app
(One version is: http://www.primegrid.com/download/primegrid_genefer_3_3_1_3.13_windows_intelx86__OCLcudaGFNWR.exe)
- Open a Command Prompt window
- Run with the following arguments, including the double quotes:
primegrid_genefer_3_3_1_3.13_windows_intelx86__OCLcudaGFNWR.exe -q "43322502^131072+1" -d 0
- If the application completes successfully with a .log file that has "is composite. (RES=" in it, then you are short-term-stable.
- If you want to run on a different GPU, change the -d parameter
- Another good test is to swap out that number in double-quotes, with this number: "43370168^131072+1"
- You could create a .bat file, to run it overnight, to ensure better stability. Details here:
http://www.gpugrid.net/forum_thread.php?id=4310&nowrap=true#43617

As an example of how I've had to adjust my factory-overclocked GPUs for complete stability at maximum stable clock, my GPUs are:
eVGA GTX 980 Ti FTW: -70 MHz
Dell GTX 980 Ti: +105 MHz
eVGA GTX 660 Ti 3GB FTW: -52 MHz
MSI GTX 660 Ti TwinFrozr III OC 3GB: +40 MHz
eVGA GTX 970 4GB FTW: -10 MHz

eVGA is NOTORIOUS for factory-overclocking too high, from my examples.

Fun!

Also my power usage on the 960 has always been around 70% under load, isn't it supposed to be at 100%? my 660 was
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Cruncher/Learner in progress.

Power Usage on the GPU can be anything, I'd ignore it. Though, in MSI Afterburner, I set the Power Limit % to be as high as it'll go.

And, regarding what a safe overclock is... the only way to know, is test test test. As people previously stated, seeing "unstable" in a GPUGrid result is almost always a sure sign you're overclocked too much.

I use the PrimeGrid test to try to find a maximum stable overclock. For each GPU, I find its maximum stable overclock, then set to 10 MHz below the value I found. :)