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Both of those cards are bottom of the barrel and won't play new games at all (Bioshock, Crysis, etc) and will struggle even with older games (FEAR, CoD 2, etc). Sell your system and build something new if you want to game.Graphics card comparo chartx1600 DDR2 vs x1950pro, blue lines:http://www23.tomshardware.com/graphics_2007.html?modelx=33&model1=737&mo del2=725&chart=2767600gs vs x1950pro, blue lineshttp://www23.tomshardware.com/graphics_2007.html?modelx=33&model1=717&mo del2=725&chart=276The general consensus is that you need 40 FPS+ for fast paced action games for smooth gameplay.A decent gaming PC that can play most games on high settings at 1280x1024 can be built for $600, and every few hundred dollars more gets you noticeable better performance/parts. $1,200 will get you a quad-core and a top of the line graphics card that will push most games at 1080p with all the "eye candy" turned on.Here is a quick rundown of parts you can buy online for the aforementioned $600'ish gaming PC:$85 - Intel e2160http://www.newegg.com/Product/Product.aspx?Item=N82E16819116036 processorhttp://www.tomshardware.com/2007/09/12/pentium_dual_core/$70-80 - entry-level P35 motherboardhttp://www.newegg.com/Product/Product.aspx?Item=N82E16813138075$60-70 - 2 x 1gb DDR2-800 performance RAMhttp://www.newegg.com/Product/Product.aspx?Item=N82E16820146565$30 - Pioneer 112d DVD burnerhttp://www.newegg.com/Product/Product.aspx?Item=N82E16827129007$80 - 320gb Seagate 7200rpm Sata hard drivehttp://www.newegg.com/Product/Product.aspx?Item=N82E16822148140$65 - Corsair 450watt 33amp power supplyhttp://www.buy.com/prod/corsair-vx-450w-power-supply/q/loc/101/205466485.html$120 - x1950pro graphics cardhttp://www.newegg.com/Product/Product.aspx?Item=N82E16814161060Case is entirely up to you for the look you want and how much you want to spend, but you should always have a case with at least a 120mm intake and 120mm exhaust fan, as heat is what kill electronics. Here's 3 choices at different budgets. Aluminum does dissipate heat better than steel.$44http://www.newegg.com/Product/Product.aspx?Item=N82E16811147038$65http://www.newegg.com/Product/Product.aspx?Item=N82E16811233018$90 and free shippinghttp://www.newegg.com/Product/Product.aspx?Item=N82E16811112139