The prices of the GTX580 are going drop before the kepler GPU's are released. So if you could you could pick up one. :) what do you say?

single hd 7970.

I think single GTX590, or go for the latest HD7000 series?

never use sli if you can awoid it, not every game supports it.

It all depends on the user. I personally would go for two 580. but if space it not there then 590 is the best option.

How about two 590 cards in SLI? that sounds good to me.

It all depends on the user. I personally would go for two 580. but if space it not there then 590 is the best option.

I'm for a two video card configuration. You can get some awesome performances from a SLI connection between them

Single GTX 590