Quote from: badman74 on March 11, 2014, 02:10:18 PM

Quote from: xtcminer on March 11, 2014, 09:21:00 AM

Quote from: badman74 on March 10, 2014, 09:16:25 PM

Quote from: xtcminer on March 10, 2014, 05:28:37 AM

Can anyone share hashrates you get on qubit on 7850 GPUs with sph-sgminer? I can't max out 1.4mh for 7850 (on Ubuntu), but reading the thread I've got impression it should be at least 2mh for 7850?

it would depend on the coin you are mining
i get 1.9mh/s with a 6850 at --gpu-engine 950 --gpu-memclock 1150 -I 16 on qubit algo
and 930kh/s with --gpu-engine 900 --gpu-memclock 1000 -I 16 -g 2 -w 256 on dark

I run at 1050-1100 engine clock, and still can't get over 1.4mh on qubit and 800kh on dark, though gpus give perfect hashrates on scrypt/scrypt-jane.
Could you share your os and driver/sdk versions?

I run win 7 with the 13.2 drivers
mem clock is what seems to affect the hashrate the most

Yeah, I tweaked mem clock, but everything above 1250 does no good. But this is not the engine or clock issue, since 30% difference is huge.
I run 13.4 on Ubuntu 13.10, and that seems to be the key. Will try another driver versions.