How much do you guys get on a R9 280x ? Are you using X13mod or -k marucoin ?
gigabyte 280x here...I get about 2.5 mh/s and I use x13mod kernel. Most other 280x cards should get something relatively close.
Also have some 750ti's @ 1.7 mh/s.
Hmm strange, I'm only getting around 2 mh/s on a sapphire r9 280x.. Would you mind posting your settings ?
getting 2.55 MH/s per 280x
-g 2 -I 18 nothing else
and 1.7MH/s on 750ti, but the new optimization for 750ti are not there...
and i thought that was quite some ... lol... 
