Quote from: kslavik on August 19, 2013, 12:12:36 PM

Quote from: superresistant on August 19, 2013, 08:01:18 AM

Just for your information : It is possible to run 2 motherboard with one PSU. If you can easily find cheap motherboard/gpu/ram that accept 4+ GPU (using pcie1x) then run 8+ GPU with one PSU.

I know that's not exactly what you aim for but it can be an alternative.

I wish there was a PSU with enough power to feed two motherboards with 8 GPU each. Usually the reverse is true: you would need 2 PSUs just to provide enough power to run 8 GPUs in one motherboard.

7950 card would take about 270-300W (mining scrypt), even if you have 5, it is already 1500W for GPUs only.
5970 card would take about 330w to run, so 4 of them connected to the one motherboard is 1320 for 4x5970 only.

Even if there was a PSU rated at 3000W, where would you plug it? You would need 30amp circuit to plug it in, and regular US circuits are only rated at 15amp, which is 1650W.

I only use 6770 since they cost the equivalent of 66.5$ (new with shipping included) where I live.
I undervolt them to 0.8v (stock is 1.125v) so having 8 on a PSU is not a big deal.

But yeah, idk for 7950...