Quote from: Jarredm on September 06, 2011, 10:11:38 PM

Hey stryker, looks like your #2 5800 is outperforming mine by quite a bit despite being clocked 25MHz lower. Could you elaborate on your miners setup? I'm on phoenix and posted the options I'm using in the post directly before yours.

Also, a general question for all who may read. I have been decreasing the mem clock on this card and now that I am down to 550 from 800 previously my mhash rate is up from 287 to around 293. Is this a benefit of the lower memory clock rate? I was under the impression that a lower memory rate was just a measure to save wattage.

Hi, I run it with the software and params below:

screen -d -m python phoenix.py -u http://jonathan@topnoc.co.uk_miner1:r292nda@pit.deepbit.net:8332 -k phatk DEVICE=1 VECTORS BFI_INT FASTLOOP=false AGGRESSION=10 WORKSIZE=256

I also use the optimized phatk kernel which accounts for about 5-8mh/s better speeds.

I've seen all sorts of claims on what makes GPUs perform better, even specific aggression levels depending on the motherboard slot.... I say play and have fun :-)

You do want to lower the memory clocks tho as mining does not make extensive use of the GPU's RAM so better off reducing the clocks thus heat

The better card is a sapphire and the software I use is linuxcoin running off a usb pendrive