I am thinking of building a computer, and I'm wondering whether the 754-pin Athlon 64 3700 offers that much of a performance increase over the 3400. Does the 1 MB cache improve games that much? Also price is a consideration here. I can get the OEM version 3400 for only $178 and get my own heatsink/fan. The 3700 costs $260 retail and comes with AMD stock cooling (which is probably loud).