Originally Posted by Dopamin3
ChrisB is right. It will POST but may not recognize clockspeed properly.
I was worried about my Phenom II x2 550 in a DFI 790FXB-M3H5 because it wasn't on the support list. It worked.
I was worried about my Phenom II x3 720 on the DFI 790FXB-M2RSH because it was a Phenom II and this was an old AM2+ board and I assumed it needed a new bios to post. But it worked.
There isn't much difference between the 965 C3 and C2. The C3 has hardware c1e and just clocks better. Fundamentally they are the same.