ATI Crossfire question, please help :)

slong

Distinguished
Jul 29, 2009
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I currently have one....

http://www.newegg.com/Product/Product.aspx?Item=N82E16814161315&nm_mc=OTC-Froogle&cm_mmc=OTC-Froogle-_-Video+Cards-_-Hightech+Information+System+Ltd.-_-14161315

my question is since i can't xfire the above card with the below card ( 4670+5770)

http://www.newegg.com/Product/Product.aspx?Item=N82E16814150447

Would i be better off xfire the card i already have with another one, or replace my card now with the ati 5770 listed above. I have been hunting benchmarks and haven't really been able to compare the two.

P.S I play many fps games and wow and atm have to set them to either medium or high to hold 40-60 fps. I have dual monitors and run everything at 1900x1200.