Re: BFG 6800 Gt will NOT stay at stock speeds
The rma would be good if they'll do it. Have you tried tech support yet? It has to be legitimately defective if the bios is reading 370, and only a 20 mghz oc is causing instability. My 6800GT was perfectly stable at 420 (BFGoc).
Well, good luck with it, hope you get it sorted.