You can overclock the CPU just by changing the multiplier setting to 42X and set the CPU voltage to 1.25 It will most likely boot, run prime95 to see if it is stable. I never use turbo or offset (I know its the best) I just set a voltage and a multiplier. If it does not boot you just reset BIOS and try with a little more voltage, IF you have a good heatsink. I use a 300Wat+ Tower cooler with 3 140mm fans and I was reaching the thermal limit of my chip at about 4.6, after delidding I can hit 5Ghz and not be overheating at all.
Fungi