The one old card in my rig doesn't seem to run nicely at all. It achieves about 350 kh/s on scrypt, but I can't get good performance out of any of the newer algos. I only get 420 on X11! I've tried all the config options I could think of...
Does anyone have any good settings for a 6870?
are you using the x11modold kernel?
I've tried that, the darkcoin-mod, x13, x15, all of which with incredibly poor performance