4x GPU Setup

[Aemon]

I'm building a new rig of 4x SLI (more would be better), however I'm having difficulties deciding on a motherboard, a PSU and case,
With total requirements for wattage its upto about 1400w and I can only see 1200w PSUs for sale so I think i'll need to put in another.
Does anyone have experience of any cases that will support the 4xGPUs and 2x PSUs?

I was thinking Asus IV Rampage as I don't really need more than 1 CPU just pure GPU processing.

So far this is the spec
1x or 2x Corsair Professional Series Gold AX1200 Power supply
4x GTX590
1x i7 2600k
4x 120gb SSD RAID 0 (Not Picked the exact one type yet yet)
1x 1tb 7200 RPM Hard Drive
RAM Undecided but around 12gb mark

Thanks In advance

 

[Aemon]

Sorry my mistake 590s are dual GPUs it will have to be 580s.

This is also a serious post its not something that I've ever really wanted or needed but this rig will fit a very specific purpose hence my mistake around the 590s. It is not for gaming it is for other processes in which i need pure GPU power as well as the SSD's to read and write quickly too.

 

[Aemon]

I was hoping for air cooling but I doubt that that will provide enough cooling for the the system. So I guess water cooling, to be perfectly honest thats more of a case of cross that bridge when i come to it regarding water cooling.

 

[Aemon]

Yes I looked into the workstation cards but to be honest there isn't a requirement for stability for this project. Just pure grunt so the use of teslas would be a waste of money when i can just use consumer grade stuff and save the money and buy something quicker or more to make it quicker

 

[Aemon]

I'd guess that if he wants SLI its gonna be a gaming rig. If its folding or some other rendering purpose I'm pretty sure you don't need to SLI the cards to get the most out of them.

Ok, this is a whole new area for me so thats interesting I will try and find more info out.

If anyone has any links to this info that would be helpful too.