Me and my buddy have a litecoin miner with 4 Radeon 6970s. We didnt realize this at first but we have a 1000W psu and it doesnt quite deliver enough juice to run all 4 video cards, once the fans started spinning it would turn off within 10 seconds. So we removed 1 of the video cards temporarily until we could come up with a solution. We ordered a Lian-Li dual power supply adapter ( http://www.ebay.com/itm/Dual-PSU-cable-Secondary-Power-Supply-Unit-adaptor-Add-a-second-PSU-to-your-PC-/191029163988?pt=UK_Computing_Other_Computing_Networking&hash=item2c7a39b7d4 ) and a 700W power supply. After hooking it all up we noticed that the OS wasnt detecting the 4th video card so I did some investigating and discovered that the 2nd power supply isnt even turning on.
We have the setting in the bios so that the computer turns on automatically without having to push the power button because we have no power button it is running in a homebuilt open-air case. I turned both power supplies off and then turned on just the 2nd power supply which is only hooked up to the 4th video card and the dual psu adapter. I then turned on the main power supply and the 2nd power supply turned off and the PC powered on. Why is this happening? is there a good reason why the 2nd power supply turns off when you turn the first one on? Help greatly appreciated
We have the setting in the bios so that the computer turns on automatically without having to push the power button because we have no power button it is running in a homebuilt open-air case. I turned both power supplies off and then turned on just the 2nd power supply which is only hooked up to the 4th video card and the dual psu adapter. I then turned on the main power supply and the 2nd power supply turned off and the PC powered on. Why is this happening? is there a good reason why the 2nd power supply turns off when you turn the first one on? Help greatly appreciated
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