Just flashed to F4 BIOS, rer-ran stability tests, everything seems the same, tried 4.3Ghz, had to bump V core a lot to get stable, 1.425 now, seems to be a poor chip.
I only ran Prime95 for 12hours, because that is the longest this PC goes without being used for work.. so maybe this weekend I will do 24 hour test.

Still seems to be a great board