ive got a q9650 coming my way with an arctic cooling freezer 7 pro. im defin going for the 4ghz mark on a decent asus board. how do you guys recommend i go about this. also, to the OP, you should add whether they made 4+ ghz on air or water or some other method.
agreed - 4GHz on AIR is a feat of voodoo, 4GHz on liquid is skill, 4GHz on DICE is easy
As to hittin the 4g mark - what kind of ASUS board you plan on getting?
Be warned, ASUS boards are overly notorious for vdroop, and you tend to have to run somewhat higher voltage settings than others with different branded mobos.
But - they make up for it with their BIOS features, and damn stable boards. Personally, I'd recommend an ASUS top-tier board . . . but they all run over $300 USD.
I'd recommend, first, to work on getting the BUS up there - keep edging the multi down until you have a BUS that you'd need to run 4G . . . if, for example, you need a BUS speed of 425 to run 4G at the CPU's highest multiplier, work it slowly up to 425 while keeping the CPU clock low . . . once you can get the SYS stable with that BUS speed, it's a lot easier to raise the multi, then raise the vcore, stress test - readjust any other voltages if need by - raise the multi again, etc.
Also, if you've never messed with GTL settings before - I'd recommend researching them, and how it affects the system . . . CPU and NSB GTL settings made a world of difference in getting this Q6600 stable at 4G on air . . . the only thing that brought my achievement down were the insane core temps I was running under load . . . this Z9700 just doesn't have the ability to dissipate that kind of heat output.