Post
Topic
Board Mining software (miners)
Re: CGMINER GPU FPGA overclock monitor fanspeed GCN RPC linux/windows 2.5.0
by
os2sam
on 17/07/2012, 10:15:20 UTC
Sometimes,also, with a lower overclock setting and lower hashrate you will get a higher Utility.
Sam

Care to explain how that works?

No,I can't explain how that works, but, ckolivas posted a suggestion a while back.

He said that once you find your max GPU Engine clock that your card runs stable at try to drop your GPU clock 5Mhz at a time to see if there's a sweet spot where your Utility increases.  I tried that and I did find a spot where my Utility went up a little at a lower GPU Clock.

Maybe ckolivas could elaborate on that?
YMMV,
Sam
I did not ever say that. I said there are certain engine/memory clock combinations where the hashrate rises more than linearly with engine clock speed with the unorthodox kernels like phatk. Utility is hashrate * random luck and it should just be linearly related to hashrate.

I think this is the post I was referring to.

https://bitcointalk.org/index.php?topic=28402.msg742189#msg742189

When I was doing this I did find a spot where my Utility increased and obviously my hashrate increased too.  Funny how the minds eye works sometimes Smiley
Sam