Re: Video card & Mobo question..
whats your budget?
SLI isn't usually beneficial for the price unless your on a high resolution (1080p+)
I'd say your system is great as is with one video card, but if you want really high performance, ATI is the way to go for multiple video cards
Proc Intel 2500k
Video XFX 6950 1Gb
Display 22'' Monitor Chemei 5ms RT, 800:1 CR
Mobo Biostar Z68A+
Mem 4 gb PNY DDR3 1600
Sound Logitech z-5300e 5.1 + Razer Orca's + Creative Soundblaster Audigy SE
PSU Corsair 520hx
OS Windows 7 64-bit
Cooling Corsair H60 Liquid Cooling
HDD Hitachi 1Tb