There is some problem:
- I can't set intensity greater than 13. With 13 i haven't any hw error, with 14 or more, i have too much hw error.
- I can't set thread concurrency greater than 8192. If i use greater value i have this error--->
maximum buffer memory device 0 supports says 536870912
your script setting come to 939524096
error -61 etc
failed to init GPU thread 0 disagling device 0
one question: that overclock need an overvolt too?
No, they aren't overvolted except for that powertune setting in MSI Afterburner. They are voltage locked Gigabyte cards.
They are running on the 13.4 win7/8 x64 driver. Maybe flashing the card with another 7950 bios would help if nothing else will work. (there are guides on the forum, don't have the links handy though)
Oh, and they are running cgminer 3.7.2.