Hi,
4gpu 280x = 69Mhs
This is for DMD, right? Could you share your full set of parameters passed to the sgminer?
Me, on 280x I can't get past 7.45 Mhs, with the sph-sgminer version 4.1.0-105-gf02f. The hash rate increase due this optimized kernel has been about 7% only.
Thanks.
That is right in the MHs range I was getting with catalyst 14.9 driver ... use 14.7 RC3 or the bin provided by pallas and see what you get