Hmm, this is frustrating me. If anyone has any insight on what could be going on, that would be great.
EDIT: Figured that I would post up my most recent config:
(I know gpudyninterval does not do anything for me, I just haven't deleted it )
Yes, I do... You are running Winblowz. Therefore, you are stuck with an max intensity of 13 and not 14-20.
Try BAMT and see your results.
As an example, I get speeds from 640-730kh/sec on my 7950 and one 7970.
BTW: Go Sapphire all the way. Solid as a rock at 0.962v and getting 730kh/sec out of it.