I also have big time questions . First off they are both XFX HD5770 cards . I need some help in setting them both up . I do not know this crossfire setup as well as I knew SLI . This is a new toy any one know what I should do first ( Before I start to benchmark ) ? What do I do now ? I have the latest drivers installed , All I have done so far is just hook it up . The cat control panel took me to the crossfire setup and well that is all I have done so far . But I would really like to Optimize the set up . So any help suggestions Any thing at all ? WOW first time for crossfire EVER ! I would like to run some benchmarks so post some suggestions for me as what to run . Thank You all .