E6750 or E6600?

I have read the other posts about these 2 cpu's. I stiill have a question. I am building a new budget rig and was planning on getting the E6750. However, a friend of mine has a new E6600 box never opened for under $150. Would I be better off to stick with the E6750 or go with the E6600. I am going with the 8800gt and 680i mobo. This is my 1st build and I am trying to get my best bang for the buck. Thank you for any advice you can give.

Well for the $40+ savings that would be your best bang for the buck. You could use that $40 for other parts or to upgrade one of the parts. What is your budget for this build? We can help you save some $ and get you a decent system, but need to know what you have and what your plans are.

My budget is $500-$600. I hope to stay as close to the bottom of that as possible. I have everything but the CPU, GPU, & mobo. I am planning on staying with XP pro for now, so I only have 2gb of Crucial Ballistix ram. I have pretty much decided on the 8800gt for sure and I am looking at the EVGA 680i SLI SE mobo.

For $500, get the E6600 for $150, get a decent mobo for about $130, and the video card $260. This will put you at $540 in good shape

Thank you for the relies. Will I be able to tell much of a difference in performance between the 2? Can I oc to make it comparable? And, no I didn't get the name from Van Morrison but I am a fan.

No. And yes
You can run 300FSB (1200QDR) easily, all stock voltages/settings and the E6600 will give you 2.7GHz.
These CPUs are all very fast anyway. It's the platform - huge memory and FSB speeds, SATA HDs with 16MB caches etc, all very crisp. Even something like E6550 has enormous performance...
Rant follows
You know, I think a lot of people are down on Vista right now because most rigs are just able to run XP perfectly now (which they couldn't do in ~2002 w/ 256MB RAM, right?) and so naturally, they have to come up with a new hopelessly complicated OS to once again require all new even stronger hardware.
It's like 'Office97' - here is a perfectly functional, complete product. Micro$oft Word and whatever, all well tested developed and refined. But how can they get your $200 bucks every few years? Convince you you just can't live without Office2000 - not to mention OfficeXP, Office2003 etc. etc.
How can they fix it if it isn't broken? How can they make something that's basically perfect be better & better (no easy task) to sell it to you again?
So my WinXP is just fine, thank you very much. It flies actually - you'll like your new rig, VillageIdiot1.
L8R