Hi guys, I currently have the processor running at 4 Ghz, but being the performance hog that I am (and jealous of the i7 speeds) wish to aim for a higher overclock. Now I take my current knowledge of overclocking with a grain of salt, as it is probably far from experienced, and probably happened on 4ghz by sheer luck. My fsb is currently running at 471mhz, although anything higher seems to hit an fsb wall (i.e i can make it post and enter windows, but massive instability). I've read about fsb holes, but not sure about what that is? (anything to do with setting the pci-e to 105? 'Cause i've already attempted that.) Here's my current rig: CPU: Intel Q9550 Mobo: ASUS P5Q Deluxe with 2001 bios GFX: 4870X2 Powercolor PSU: Toughpower? 850w RAM: 2x2gb GSkill F2-8500CL5 PI @ 5-4-4-12 991mhz Overclock settings for 4.2Ghz: FSB: 495 FSB strap: auto RAM mhz: 991mhz CPU voltage: 1.3675v CPU GTL (0/2): 0.675 CPU GTL (1/3): 0.680 CPU PLL: 1.54v FSB termination: 1.4v DRAMv: 2.1v NBvoltage: 1.4v NB GTL reference: 0.66 SBvoltage: 1.1v Loadline calibration: enabled CPU spread: disabled PCIE spread: disabled CPU enhancement: performance Any tips at all? Appreciated it. Thx.