Quote Originally Posted by Mechromancer View Post
Very nice!

I'm starting to have doubts as to the quality of this Qimonda GDDR5. Apparently the 8800GT had problems due to their memory as well. I've also read a bit about how GDDR5 works and its NOTHING like the previous generations of memory. It varies clockspeed, voltage, and other parameters automatically to resolve signaling issues. Screwing with the BIOS is probably messing with this function in some way.

GDDR5 Articles:
http://www.extremetech.com/article2/...2310000,00.asp
http://www.eetasia.com/ART_880050357...P_74d933d1.HTM

Read up on how "signal training" works for yourself and lets discuss it. I'm no memory expert so I won't pretend to know how it all works. It just seems like these BIOS mods are the culprit.
The 8800 GTS also had Qimoda chips, and I don't see anyone complaining about them. The 8800 GT was plagued by an inadequate VRM for its given specifications.

Further; Qimoda supplies GDDR chips for many other cards, all without any issue. That's beside the point that; to even suggest that engineers at either Qimoda or ATI/AMD didn't put the GDDR5 samples through rigorous testing is way off base.