FPO number Q812A268, my board is a Gigabyte EP35C DS3R with F2 bios verion installed, i`ve tried with F3b and F3e but the results are mostly the same, 2 GB of Corsair XMS2 6400 CL4, Arctic Cooling Freezer Pro 7 on the cpu, the ram voltage is 2.1 when oc`ed it runs 1:1 with the cpu, i don`t know what to say have I stumbled upon a very hungry CPU or am I not doing the correct changes in my bios.I must say that the PCI-EX clock is set to 100 or 90 in both ways the cpu needs 1.4 to hit 4 ghz, i don`t leave it on auto because it doesn`t start at all at that frequency, that`s about it.