Wait for the E8400 instead of getting the E6750. The E8400 is only $200-220, and will be far better (especially for OCing). It will be out on the 20th of this month =)
I just bought an e2160 to upgrade from a P4 3GHz and the jump was huge. My plan is to keep this chip for about 12-18 months and then by a Penryn quad core when the prices drop.
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