880 Kh/s per 1 7850 - normal or not?
Not normal.
I'm mining with 7850 about 1000 Kh/h with PHM-SGMiner and these settings: sgminer.exe --kernel darkcoin -o stratum+tcp://xxx.xxx:xxx -u xxx -p xxx -g 2 -w 256 --lookup-gap 2 -I 12
I use this
https://bitcointalk.org/index.php?topic=475795.0and my conf
sgminer.exe -k darkcoin -d 0,1,2 -w 256,256,256 --thread-concurrency 8192,8192,8192 -I 13,13,13 --auto-fan --temp-target 65 --gpu-engine 865,865,865 --gpu-memclock 1200,1200,1200