3rd or 4th 7970 worth it? Running Eyefinity

[Arr0way]

Hi All,

I am running 3240x1920 Eyefinity with 2 x 7970 Sapphire OC edition @ 1150 core, tbh I get half decent performance at this resolution.

My question is how much more would I get out of adding a 3rd card or a 4th... 7970 ?

Note, if I add a 3rd I would have to either buy a new motherboard (PCIe spacing) or water cool, if I buy a 4th i would need to buy a new board and water cool.

My other concern is that I've seen a lot of games, crysis 3, tomb raider etc max out my VRAM (use all 3Gb) in game using higher settings - probably due to the higher resolution.

If anyone knows of a benchmark for adding a 3rd and then 4th AMD card that would be great.

Processor is a i7 3770k @ 4.6Ghz on a Gigabyte Z77X-D3H mobo.

Cheers

 

[Arr0way]

Ok, with the reference cooler the 290 would only use 2 slots though right? Overspill is with non ref coolers?

I am toying with the idea of 2 3 or 4 290s now, it would mean a new motherboard & water cooling (when OC get the water blocks back in stock).

I will open another thread asking people if they think a 3770k @ 4.6 will bottleneck 4 290s.

Thanks