Any 6+ GPUs on a single miner?

[jasinlee]

Anyone got a build for more than 6 GPUs on a single rig working? Looking at the options out there to see if its viable.

[ssateneth]

I have 5 rigs with 8 GPU's each (Some are dual GPU cards). 5850, 5870, 5970s. Z77A-G45 or 890FX-GD70, PCI-E 1x risers, Seasonic x-1250 or Rosewill Lightning 1300w or OCZ ZX 1250W or SPI Magna Pro Gold 1200w, Win7 x64, Driver 11.12, SDK 2.1 plus SDK 2.5 (SDK 2.1 is whats mined on, 2.4+ is required for 2.1 to even be detected and useable), bfgminer, phatk, vectors 2, worksize 128, intensity 11, 1 gpu thread, roughly 1 memory MHz for every 5 core MHz.

Image is clickable for higher res. I just set it up yesterday, I'll clean up the wires later.



Screenshot of bottom right rig's mining software in operation.

[jasinlee]

Awesome setup, but I was kinda wondering if the cost vs power savings (although probably minimal) would be worth looking at a 6-8 card in 1 rig setup was worth looking into.

[SkyNet]

Stupid question maybe.
How many PCI-E connectors do these power supplies have? Are they enough to run these multi-GPU rigs?
If not how do you power them?

[juggalodarkclow]

From my experiences most PSU's have 1-4, some might have more but I'm not sure. If you don't have enough then you buy these

[zvs]

i have one with three 5970s  (ed:  err, I guess that's not *more* than 6 GPUs)

PSU is 1200 watts and has 3x2 pci-e connectors

and, no, it isn't worth it unless you already have  a decent amount of the hardware just sitting around

[jasinlee]

I am poking around the internet, looking for a way to setup 4 or more cards with potentially up to 10 GPUs total.

[crazyates]

I am poking around the internet, looking for a way to setup 4 or more cards with potentially up to 10 GPUs total.

ATI drivers limit you to 8, in both Linux and Windows.