I believe, can you share your settings for miner and card bios and clocks etc. please ? Mine 7950 is at 910/1375 now and its at 18.6 at ubiq.
#7950
-cclock 1100
-mclock 1500
And did you mod the bios for straps or default ? Elpida or Hynix mem ?
Hynix on both and default straps. What tool can I use to modify straps on these cards ?
I used this -
http://www.overclock.net/forum/67-amd-ati/1554360-tahiti-memory-timings-patch-hynix-vram.html , its an app that patches the bios file with some straps, but i have hard times finding stable mem clocks after the strap mod so i returned to defaults straps.