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Old 2015-12-16, 02:05   #1
UBR47K
 
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Aug 2015

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Default Recommended GTX 760 clockspeed?

I own a factory overclocked GTX 760 (non-reference)
Core specs: (Base:1085MHz / Boost:1150 MHz) / Reference: (Base: 980MHz / Boost: 1033MHz)
Memory: 6008MHz

I am thinking on using this card with CUDALucas but it throws errors at the "-r 1" self-test and any exponent test.
Since I will be using Linux, I will flash a modified BIOS to it containing the new clockrates and fan speeds.

Should this card be used for CUDALucas or TF? Any suggestions on what should I set the clockspeeds?
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Old 2015-12-16, 02:18   #2
kladner
 
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Try turning up the core voltage in steps. I think this makes the DP functions more reliable, while the DP throttling keeps the card from overheating. It depends on how many times you want to run -r 1.

The other thing to try is turning down the memory clock. 100 MHz steps have worked for me. Of all the (consumer) CUDA cards I have run, only one has been able to do CuLu with the memory clock at the card's stock speed.

Are you familiar with MSI Afterburner? You can use it to control and monitor your GPU's condition. It is what I use to play with frequency and voltage.

Also, there is memtest for CUDALucas. Someone else will have to explain that. I get by, but would not want to advise anyone else. Memory stability is one of the key elements of success with CuLu.
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Old 2015-12-16, 04:41   #3
LaurV
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Additional to what kladner said - he didn't say about TF - this card is average-to-good at TF, so if you can't make it reliable at LL testing, then dld mfaktc 0.21, dld misfit, make a gpu72 account, and give gas to it. It can produce over 200GHzDays/Day of TF. The TF does not use (much) memory, so even if the card won't prove to be reliable at LL (this depends on each particular card, and not about the type nor the manufacturer), it still can be very reliable at TF.

Last fiddled with by LaurV on 2015-12-16 at 04:45
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Old 2015-12-16, 06:31   #4
Mark Rose
 
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My GTX 760 that will do about 260 GHzd/d with the factory overclock. I could push it higher, but I'm lazy.
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Old 2015-12-17, 18:30   #5
TheJudger
 
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Please keep in mind that mfaktc is very bad in detecting hardware issues. This is caused by design (of mfaktc) and how TF is done in general.

Oliver
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Old 2015-12-17, 18:57   #6
chalsall
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Quote:
Originally Posted by TheJudger View Post
Please keep in mind that mfaktc is very bad in detecting hardware issues.
An important thing to be reminded of. Thanks.
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Old 2015-12-20, 17:22   #7
UBR47K
 
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Lowering the memory clock by 105MHz made the card LL reliable, 1 match so far and 3 -r 1 tests passed.
Thanks for the input.
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