I'm thinking about setting up some rigs, but really struggling to come up with solid data on a few key questions.
1. I found a motherboard which has 1x PCI Express 2.0 x16 slot and 4x PCI Express x1 slot. If I got four riser cables, would this be capable of running five ATi HD Radeon 5870s? The motherboard is a Gigabyte GA-770T-D3L.
2. I've heard that as an alternative to a single very powerful PSU, it's possible to run two smaller PSUs. This would definitely be an attractive option for me. Can anyone give me a solid tutorial for this? Preferably with images.
3. What's the best way of keeping said riser cables and the five attached graphics cards tidy within a case? What's the best way to keep them cooled without resorting to water cooling?
4. How easy/difficult are the XFX HD-587X-ZNFC 5870s to overclock? I've been basing on a 950/300 clock, which seems possible from an 850 core, but I'm just trying to be cautious.
Thanks for any help.
In no particular order:
There are almost no cases that can handle 5 double slot GPUs. THe rosewill Thor is the only one I can think of that costs less than $300. Unless you want to build your own custom case tt might behoove you to pay a little more and get something like a 890FXTA-GD70 and write off the savings on riser cards.
Two smaller PSUs are rarely a superior alternative to a single large PSU, pricewise, hasslewise, dangerwise. Perhaps in terms of cabling...
I'm a little unclear on the 5 card thing myself, some people claim windows is limited to 4 physical GPUs, very little proof offered though. It has been suggested linux will overcome this issue. And yes x1 slots will do just fine.
5870s are very easy to overclock, in windows. In linux, a little harder. Forewarned is forearmed.
Cooling and tidyness are always a hassle. Lots of cable ties and lots of fans I guess.