I found these two, but not sure if the price diffrence is worth it...
8800GTS 640MB 320-bit
http://www.newegg.com/Product/Product.aspx?Item=N82E16814130071
GeForce 8800GTX 768MB 384-bit
http://www.newegg.com/Product/Product.aspx?Item=N82E16814130072
or is my X1900XT 512 as good as these?
8800GTS 640MB 320-bit
http://www.newegg.com/Product/Product.aspx?Item=N82E16814130071
GeForce 8800GTX 768MB 384-bit
http://www.newegg.com/Product/Product.aspx?Item=N82E16814130072
or is my X1900XT 512 as good as these?