Best GPU configuration for 1080p monitor

[2wenty]

Hey guys,
I'm looking to build a new rig here, and I'm a bit stuck on GPU choices here (should this go into the graphics section?). I would prefer to use just one 1080p monitor (probably 120Hz) and I'm looking for a high-end gpu configuration involving SLI/CrossFire. I have a pretty decent budget for the whole build ($3500), so I can probably accommodate most configurations, but I just wanted to know which set up would be most effective in terms of 670 vs 680 vs 7970 (Ghz) and whether SLI/CrossFire is actually worth it. I'd like to play FPS games at high/ultra video settings, and I'd like to know the best way to go about doing it.

Finally, for future-proofing, is 3Gb more worthwhile, and could you also recommend a suitable PSU wattage for such a GPU configuration (Ie. would I need more than 850W?).

Thanks in advance for everything!

 

[Outlander_04]

GTX 670's in SLI

The 680 is obviously more powerful , but not enough to justify the price difference
The Gigabyte 3 fan windforce model would be first choice IMO

 

[lt_dan_zsu]

I would go with 7970 or 7970 ghz. The ghz is stronger than a 680 and also costs less. That seems like the best choice if you ask me.

 

[Outlander_04]

I would go with 7970 or 7970 ghz. The ghz is stronger than a 680 and also costs less. That seems like the best choice if you ask me.

Ive juast had a look at the Tomshardware benches of the 7970 GHz and you may well be right

The lead seems to swap back and forth depending on game and which version of DX is used