Solved all my problems with a fresh install of vista x64 and removing my adaptec controller , no laggin and default memory lowgap with GTX 280 in sli. Running some stability test now...linx, 3dm06, vantage and FSX.
Seems that 01/14 bios overvolts a little, bios 1,375 and cpuz reads 1,392...
I'll post my template soon if my current setup seems stable