370$

http://www.amazon.com/MSI-N580GTX-LIGHTNING-Video-Card/dp/B004XVMAKA/ref=sr_1_2?ie=UTF8&s=electronics&qid=1304755647&sr=1-2 Putting it within 5-6$ of the 6970, ATi's fastest single GPU. http://www.hwcompare.com/9154/geforce-gtx-580-vs-radeon-hd-6970/ You also get PhysX, CUDA, and the...