e6600 vs. Xeon 3060 vs. e6700

[palindromica]

So now that the 2900XT is out and has disappointed me with its high noise and heat dissipation I've decided to go nVidia this round for my new build. I want to OC as much as I can and was about to buy, but I read a few forum posts saying the current batch of e6600s haven't been overclocking well. Should I upgrade to the e6700 (which would force me to trim graphics card to a GTS 640)? or will spending the extra $10 on the Xeon part ensure a good overclock?

I am planning on getting the Gigabyte DS3, will be cooling the CPU with the Thermalright Ultra 120 extreme and scythe S-Flex SFF21E, and am shooting for a 1.0-1.2GHz OC. Thx in advance for the advice.

 

[dasickninja]

Go for the Xeon.