Author Topic: Power issue Z77A-GD65 (6xGPU) (Dual PSUs)  (Read 3611 times)

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Offline joxTopic starter

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Power issue Z77A-GD65 (6xGPU) (Dual PSUs)
« on: October 05, 2013, 04:44:46 PM »
Hello there forum,

I have a problem... My mining rig doesn't boot for the majority of the times I turn it on. When I try to boot my rig I only get a black screen but if I wait a while when the screen is black I'm able to load bamt the next time I boot, but I won't get any graphics only a small green box in the top left corner. I'm also using a dual psu cable to avoid voltage regulations. However I have made it work before I did put it in my custom made chassi but I was only using one PSU and 2 gpus. I have nothing connected to the Sata ports and I'm running bamt from a usb.

My specs are:
MSI Z77A-GD65 version 2.3
6x MSI twin frozr 3 7950 v277 (8+6 pin)
2x Corsair AX1200i
Corsair Vengeance DDR3 8gb
Intel Celeron G1610

Any idea how I can make this work? All help appreciated!  :'(


Offline Recoinoiter

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Re: Power issue Z77A-GD65 (6xGPU) (Dual PSUs)
« Reply #1 on: December 23, 2013, 09:52:41 AM »
Did you ever figure out what was going wrong? I have the z77a-g45 with 2 psus and i'm seeing the same issue. I also have 6 gigabyte 280xs, a 1KW and a 850w psu, both 80 plus gold, and am using xubuntu.

What risers are you using? Did you cut the 12v lines for the cards powered by the second PSU?


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