Hi, Not sure this is the best place to ask but couldnt find anywhere more suitable.

Looking to upgrade shortly and just wondering how best to decide between GFX cards.

Main problem being using 1 or 2?

AMD cards as the example as i prefer using them,

Would say 1x 5870 be better than 2x 5770's - or how big is the difference? is there any definable way to decide? Or is price the best indicator? (e.g 2x £150 beats 1x £250)

Many Thanks