Overclocking utility's are good for trashing a system always use bios. First has the system pasted Memtest and OCCT tests at stock to insure basic system stability. Start by dropping memory divider down to take the memory out of the equation and then find CPU max then drop back to stock and raise memory up to find max. Then put the two together to find Max OC. Most DDR2 1066 sticks have little headroom left in them may be 1120-70 depending on the memory. Test...test...test..
Asus Rampage/Maximus Formula, Q9450@3.73ghz, 4GB OCZ Reaper pc8500,EVGA 8800GT w/EK full cover block, 3 Seagate320s in raid0 and Samsung750gb ,Zonar D2X,Corsair HX1000, Water cooled:Fuzion w/accelerator nozzle ,1 D5/EK top and 1 DDC w/xspc top pumps,(2) MCR320 rads,120mm fans(6),140mm fans (2),Gigabyte Aurora case