Bitcoin Forum

Bitcoin => Mining support => Topic started by: jasinlee on April 01, 2013, 02:14:25 AM



Title: Any 6+ GPUs on a single miner?
Post by: jasinlee on April 01, 2013, 02:14:25 AM
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.


Title: Re: Any 6+ GPUs on a single miner?
Post by: ssateneth on April 01, 2013, 07:19:33 AM
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.

https://dl.dropbox.com/u/9768004/SAM_0078small.jpg (https://dl.dropbox.com/u/9768004/SAM_0078.jpg)

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

https://dl.dropbox.com/u/9768004/8gpu3.png


Title: Re: Any 6+ GPUs on a single miner?
Post by: jasinlee on April 01, 2013, 09:10:21 AM
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.


Title: Re: Any 6+ GPUs on a single miner?
Post by: SkyNet on April 01, 2013, 10:28:56 AM
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?


Title: Re: Any 6+ GPUs on a single miner?
Post by: juggalodarkclow on April 02, 2013, 12:42:47 AM
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
https://encrypted-tbn1.gstatic.com/images?q=tbn:ANd9GcTHVPBmjdHFojkF1SEKnCYwyJoJ0SMPjjgxVmN1CUPdXyi42ogw


Title: Re: Any 6+ GPUs on a single miner?
Post by: zvs on April 02, 2013, 06:55:41 PM
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


Title: Re: Any 6+ GPUs on a single miner?
Post by: jasinlee on April 02, 2013, 07:03:44 PM
I am poking around the internet, looking for a way to setup 4 or more cards with potentially up to 10 GPUs total.


Title: Re: Any 6+ GPUs on a single miner?
Post by: crazyates on April 02, 2013, 07:42:29 PM
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.