Overclocking i7 920 - what ram?

[3tg]

I'm building a i7 rig, using a EVGA x58 mobo and not sure on the ram, right now it is
OCZ DDR3 PC3-12800/ 1600MHz
Timing CL 7-7-7-24 (CAS-TRCD-TRP-TRAS)

Will I be able to get upto 4ghz overclock with that ?

or should I upgrade to
OCZ DDR3 PC3-14400/ 1800MHz
CL 8-8-8-26 (CAS-TRCD-TRP-TRAS)

Thanks

[Rudra.J]

Hey!
Well try to overclock with the present RAM for a short time. If that gives you no problem go ahead... else update the RAM... Its worth a try...

[need Tos]

On the Asus or any i7 board, the main point is to overclock the BCLK, for 3.8ghz, BCLK should be at 180 and 3.6ghz would be 160. 200 would be 4ghz on the BCLK. you will see your ram speed change when u do that though. if you have the 1600mhz dominators, then you will have to underclock them a bit to reach the OC mark you stated. I know at 3.2ghz and 4ghz your ram can be set at 1600(at least it was on my Asus board). but with 12 gigs I don't know how stable that would be at that speed so you might be stuck at lowering the speed on the ram a tad just to be stable(not sure entirely, I only have 6GB). shouldn't affect performance much if at all though since it's triple channel