Rancar, That clarifies things, thanks alot for your reply

5184000 pixels = 4x slaves running 1440x900 resolution
Just for comparison, it is 75% of 6912000 pixels = EyeFinity 3x 1920x1200 displays

Thats alot of pixels to toss around, would a 1Gb Radeon 4870 be enough to run this in Dalaran (with lowest gfx)? The other specs on computer will be Core i5-760, 8Gb 1600Mhz ram and SSD-drive.

I could grab a 5870 but it feels so wrong to abuse a card like that with a 5 year old game, set on its lowest gfx, with frame rate limiter at 15