I agree unless you have at least hard core water or better 1.5+ will be an issue for most longterm. My Wolfy is a Q745A576 1/4/08 pack and seems to like 4500-4600mhz at 1.45-1.46v, beyond that requires a much larger increase in juice which is simply not worth the extra heat except for an occassional speed run. Chip settings are as follows. CPU PLL V- 2.20, FSB Term V- 1.40, NB V-1.55, SB V-1.20, Clk Overcharge V-1.0 and I run Load line Cali disabled which seems to work better then enabled with this Wolf compared to my Quad. CPU and NB GTL Ref set to minimums of 0.57 and 0.61 which certainly helps stability on this P5K Prem beyond 500fsb, max so far is about 540 though I have not tried a lower multi combo yet.