A couple thoughts:
- lower the GPU memory to 900. I don't think you'll be able to do this with cgminer, you'll need to use MSI afterburner. It'll make it run cooler and use less electricity.
- no need to specify vector or work size. cgminer is smart enough to know what's best for your 7970s
M
I believe cgminer will default to -w 64 which is best for 7970's.
Thank you very much for your help and input.
I've just edited the settings as follows:
cgminer -o stratum.bitcoin.cz:3333 -u username -p password -I 9 --gpu-engine 1100 --gpu-memclock 900
I set the Memory Clock to 900MHz in Afterburner before running cgminer with the above settings. Does everything look good now?
edit: getting 650 - 670 Mh/s on each card.
That's about the right speed for a 7970 at that engine speed.