I will be getting new ram in the next few days (1066 DDR2 Dominator)

Why would you be able to lower your VCORE from having faster memory modules? Did you test to see if your OC was hitting a CPU/fsb/voltage barrier or you assume you hit a memory barrier? Just wondering where you're at for your OC.

no it wont help your oc it may even hurt it having 4 slots full, its a HUGE waste of money, your reapers are not hurting your oc. dont waste your money, and dont buy that ram.

I agree with sgdude. Any possible bandwidth gains with the Dominators would be very small indeed over the memory you have already, and a system performance increase would not be noticable.

I have noticed a block in my OC because I have to though my vcore too high to reach 3.8 (1.45v). Many other places I have gone to haves said to increase my FSB, but I have hit a wall, my max FSB is 400. With 1066, i will have 533. A little bit more room, but it is worth it so i can possibly get my vcore down for even my 3.6 OC (which is at 1.35 in bios) with a higher FSB. Also, i just threw in the bandwidth thing because I assumed I would have extra. The reaper suck hard at OC in the first place and 1066 should be easier to achieve when getting a 1:1 ratio. I am not going to get rid reapers, but if these do not solve it, then i will just keep them for when I get an e8400.