So basically I've been having a lot of trouble with my computer crapping out on me, whenever I open a game actually, so I took it in to the shop. The guy said it wasn't the cards but rather windows, reinstalled it, and sent me on my way. 1 weeks later- craps out again every time, I reinstall windows, nothing. Now he wants me to pay $150 and upgrade to a 8800 GTS 6xxmb, and I'm wondering if it's worth it. It the difference in performance really that great, I mean I understand the benefit of single card setups but... Also, with the 9 series out would it really be much more money to upgrade to an even better card (i.e. is he trying to drop some last gen. stock on me?). Obviously I'd not like to go much above that price, maybe $50 at the most. Not sure how important this is but the games I play are usually Company of Heroes, CoD4, Oblivion, etc.