Hello, I bought the mac pro with the default config 2.6Ghz Dual Xeon 7900XT NVidia. Somehow when playing PC game with Bootcamp on my 23 ACD the graphic isn't very good compare to the actual High End PC one. I saw the exact game my friend play on his Alienware PC and the graphic was top notch! It's very smooth and crisp. However on my Mac it isn't the same. The graphic isn't as nice as his. I notice this on all the Games I play with Bootcamp. Is this Mac Pro not built for gaming? Am I wrong to buy the Mac Pro thinking it play game like the PC? I like Mac a lot and OS X but I play games a lot too. Well, I was thinking return or sell my Mac Pro off eBay and buy the Alienware or get the ATI x1900. Will this card make any different? Please help me.