Actually the highest ive proven stable so far was 4.05 Ghz
I cant get a 475 bus stable, thats 4.2~ ghz....
Im gonna settle on around 4.15 4.16ghz and just lower the voltage.. it seems I have a FSB hole right around 4.2 Ghz, I cant even post using any FSB all the way up to 500 bus, and there is no way in hell I am gonna use 500 bus with a quad, 8GB of fast RAM, and this nvidia chipset lol
It seems mega_option and a few others were right... 780i just can't do quads that well. Damn it really shined with that dual core though.....