Anyone knows what algo is most preferable to mine SFR with R9 280X?
At current difficulty, X11
Thanks, now another question: When I try to mine on X11 pool, the miner doesnt accept any shares (A:0), instead I receive numerous HW errors

This is my start.bat file:
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
sgminer.exe -k darkcoin -o stratum+tcp://p2poolcoin.com:11918 -u MyWalletAddress -p xxxxx --thread-concurrency 8192 -I 13 --lookup-gap 2 --
worksize 256 -g 2 --gpu-engine 1020 --gpu-memclock 1500
sgminer version 4.1.0, Catalyst 14.6
You need an updated x11mod kernel. Search on the forums and you will see issues with certain sgminers and x11 in regards to and 14.6 drivers.
You don't need to install an all new miner, just need to replace the kernel file.