Which is best for crosfire,SLI or Single use.
HD 4850 512MB 256-bit GDDR3
http://www.newegg.com/Product/Product.aspx?Item=N82E16814150337
or
GTS 450 (Fermi) 1GB 128-bit DDR3
http://www.newegg.com/Product/Product.aspx?Item=N82E16814127606
HD 4850 512MB 256-bit GDDR3
http://www.newegg.com/Product/Product.aspx?Item=N82E16814150337
or
GTS 450 (Fermi) 1GB 128-bit DDR3
http://www.newegg.com/Product/Product.aspx?Item=N82E16814127606