Can someone reccomend a good cheap processer (AMD only), that can keep up with my geforce 6800? I don't know how much my 2500+ is slowing down my card, but it feels like alot. I found an amd 3000+ for $147 on newegg, OEM. Will that be enough to satisfy my card and hl2? Also, will my heatsink for my amd 2500+ barton (came with it, stock heatsink) work on this?