Saw my typo..... HD 7950 DD. I also have a xfx hd7970dd but its packed away.
I did try raising the memory clock to 1150 and 1250 n turned up the power by 5% in wattsman. It ran hotter(60-65) n got me like 12.8 MH but it should b higher. It running at like 55-60 degrees with fan at 100%