Current rig:
Intel E8400 E0 stepping with Thermalright HR01-Never OC
Corsair 1066mhz 2GB X 2 with dominator- never OC
Gainward 4850GS -Official OC
Biostar Tpower I45
Mushkin 580AP

May I know how can I overclock this rig? I know nothing about OC and never try before. TQ

Thanks cartack and hilmiangah.
But currently I got one PC only. May I know what should I do if I cannot start my computer normally?

Nah, i haven try OC yet. I just worry that if I try OC but cannot boot as normal, thn wat should I do?

Coz I only got one computer, if it cannot boot as normal, thn I will not able to ask u at here anymore. TQ

Hi mate, I tried and I failed I follow exactly what it written in http://www.biostar.com.tw/app/en-us/event/tpi45oc/index.htm and finally I failed

Configuration :
> CPU : Intel Core 2 Duo E8500
> Memory : Corsair TWIN2X2048 -10000C5DFXMS2 on DIMM1, DIMM2

BIOS SETUP :
> Intel SpeedStep : Disable
> Ration CMOS setting : 6
> Overclock Retry Count : 2
> FSB Frequency setting : 600
> FSB to Northbridge latch : FSB1333
> DRAM Frequency : DDR2 1220
> DDR2 Enhanced mode : Disable
> DRAM Timing Configuration:
>> DDR2 RECOMP Configuration : Configuration 3
>> tREAD Value : Auto
>> Configure DRAM Timing by SPD : Enablen
> Clock Gen Configuration
>> CPU Clock Driving : Auto
>> CPU Clock Skew Control : 200ps
>> MCH Clock Skew Control :Auto
>> CPU Clock driving Control : Auto > Voltage Configuration
>> CPU + 0.4V
>> DDR +0.4V
>> Chipset + 0.3V
>> FSB + 0.3V
>> CPU Core 1 GTL Ref Voltage 0.63*VTT
>> CPU Core 2 GTL Ref Voltage 0.63*VTT
>> MCH GTL Ref Voltage : Auto

What should I do in order to OC? TQ