How well should I be able to OC the CPU on my new computer?

wanderer

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Jul 9, 2009
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18,530
Antec 1200 Full Tower Case
Intel Core i7 920 (D0 stepping, and idles around 36c)
ASUS P6T Deluxe V2 LGA 1366 X58
OCZ Gold 6GB DDR3 1600
Sapphire Radeon HD 4870 X2 2GB
Corsair 850W PSU
WD Caviar Black 1TB 7200 RPM
Sony Optiarc Black 24X DVD/CD Rewritable Drive
Scythe Mugen-2 120mm CPU Cooler

Anyways I've never overclocked anything before but it seems like it's a pretty good time to start. Just wondering if anyone who has a similar rig has any pointers.
 
D0 suppose to be higher, who knows, try to start at 1.275 v and 3.5 and go from there, i got okay as I started at 1.35 and 4 Ghz and lowered it to 1.33V at 4 Ghz (no turbo, HT on), reports of ppl with 4+ Ghz and 1.28 are there, and ofc there are the monsters that does 4.9 on air under 1.4V (not safe for a typical chip, that one he had loves voltage and didn't put out any heat)