Now I'm wondering if I can stack a 6950 using the same process. So far I'm doing 260-265 sols.
after seeing this, i decide to see if my 5850 would run...it does
5 sols/s
Seems like the old Terrascale cards don't work well with current code.
I see 40-45 ballpark with a few HD 7750s (lowest-end discrete GCN cards) - catalyst 15.12 on Win 7.