I'm running 2 monitors right now. Set up is a 30" monitor on my GTX285 and a 20" connected to the GT120; I wanted the additional VRAM for the second monitor and figured it would come in handy. Anyways I originally was dead-set on the 5870, but recently I've noticed I can't even buy it at the Apple Store. In a sense I've given up. However I'm still thinking if the 5870 would be a better option for me? The problem I have with it is the lack of VRAM. I'll be running a third monitor in the future and having a 5780 frees up a PCIe slot as well.