Quote Originally Posted by M-XXXX View Post
First off WAYY too much VTT!!! I haven't gone over 1.52 for 530 quad fsb 3d benching stable, and even around there i was nervous! You really could have hurt your chip already...
Bump that all the way down to 1.32~1.4

More VNB--go to around 1.5~1.6 should get you stable. Though you shouldn't need that much for 475-480, i can get 500 at 1.5v so i'm guessing this is probably your cpu's limitations.