I got my 270X uo to 450 h/s and I'll take that but I can't get my 280X past 445 for nothing.
It has the Elpida memory. I tried auto set, -a without the -h, -a with -h. Changed the -h from 832 (which it showed at beginning) 864 and 800. Nothing.
Runnung the 13.12 driver version on Windows 7. I can't down clock my core under 1,000 and have the memory at 1,575.
Elpida is slag , 7950 and 280x are the same speed 450H. expect Claymore optimization.
The big X13mod, works on Radeons 5xxx-6xxx. Its obvious that this is using "hacked" x11mod from Girino's exe (with opencl file >270KB) example cmd line for 5850