hi, im new and i just my first build, i got the evga 780i board with the e8400 cpu, im running it now i think at 444mhz FSB, the cpu is 4 hour prime95 stable at 4ghz at 1.32 volts, at never ent past 55c on speedfan so its liek 50 on real temp, air cooled

i want to get it higher i been able to get it to 4.2, but it stays stable for about 2-3 hours on prime95, i was able to get it to get to the desktop at 4.5ghz but wasnt stable and caused the one board audio to fail.

what should i do to get a higher oc?