Quote from: anoncoinpoolnet on December 23, 2013, 09:50:25 PM

setx GPU_MAX_ALLOC_PERCENT 100
cgminer.exe --scrypt -o stratum+tcp://nl.anoncoinpool.net:5555 -u xxxxx -p xxxx --thread-concurrency 11200 -g 2 -I 13 -w 256 --gpu-fan 30-75,30-75 --temp-cutoff 90,90 --temp-overheat 85,85 --temp-target 72,72 --gpu-memclock 1500,1500 --gpu-engine 1080,1080 --gpu-powertune -20,-20 --expiry 1 --scan-time 1 --queue 0 --no-submit-stale --lookup-gap 2

Sapphire Dual X 280x R9

..with these settings i only got around 660 kh/s with my XFX R9 280X TDFD.

this works best for me (~740 kh/s):

Code:

cgminer --scrypt -o xxx -u xxx -p xxx -I 13 -w 256 -g 2 --gpu-engine 1050 --gpu-memclock 1500 --thread-concurrency 11200

i am running cgminer-3.7.2-x86_64 on xubuntu 13.10 with catalyst 13.101. does anyone get better results for the same card on linux?

cheers