Best Graphic Card on X ToWeR

[XxJuxX]

Hello !! (and 1st, excuse me for my bad english, I m french)
I joined here to request you the best Graphic Cards of my project of Home Made Case :



Here is a video of presentation of the project :

http://www.youtube.com/watch?v=r2zDVX--tq8&feature=youtu.be
HD : http://www.youtube.com/watch?v=HSQlp_v8PxM&feature=youtu.be

I wait for GTX 600 series or i go tri SLI 580 ??? Its for Bench and 3D Surround Gaming

Thanks

 

[sosofm]

Great case.

 

[XxJuxX]

Thanks!