Why would you buy the 8600GT? The 2600XT costs the same, but is faster. If you are that worried about price, you are better off buying the 7600GT for ~$90. Also, why buy the Sempron 3400+? Grab a slower chip and overclock the crap out of it.
its a setup I have now and was just wondering about benchmarks i can overclock a sempron 3400 2.00 to 3.0ghz 5100 sempron but i need faster memory so it has some overclocking potential, mulitplier is locked at 10