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Title: Dual PSU, will it work? Post by: Cdecker on May 16, 2011, 06:41:47 PM I'm not much of a hardware guy, so there are quite a few things I don't get about this setup.
I ordered a few new Cards and I think they will put me over the limit of my PSU (Corsair 650W) so I think I'll buy another PSU and attempt a dual PSU setup (shown here http://www.burningissues.net/how_to/power/psu.htm). So here are my questions:
Title: Re: Dual PSU, will it work? Post by: SlaveInDebt on May 16, 2011, 07:12:57 PM Same situation here with my Corsair TX650. Its sweeting at 550w at the moment.
The adapter I have is found here http://www.frozencpu.com/cat/l3/g2/c413/s1220/list/p1/Cables-PSU_Cables-2024-Pin_Adapters-Page1.html (http://www.frozencpu.com/cat/l3/g2/c413/s1220/list/p1/Cables-PSU_Cables-2024-Pin_Adapters-Page1.html) Not heard of grounding issues, I'll be using the TX650 to power the board +2x5850's +5750 and an oem 300w psu to push a single 5850 until a 1000+ watt psu is ordered. Title: Re: Dual PSU, will it work? Post by: keybaud on May 16, 2011, 07:48:18 PM I believe that connecting the green wire on the PSU's motherboard connector to any of the black wires will fool the PSU into thinking that you've turned the motherboard (that isn't there) on. You can then use the PSU to power other devices as normal.
Title: Re: Dual PSU, will it work? Post by: Cdecker on May 16, 2011, 08:40:40 PM Same situation here with my Corsair TX650. Its sweeting at 550w at the moment. Thanks for the link, I ordered 3 right away :-)The adapter I have is found here http://www.frozencpu.com/cat/l3/g2/c413/s1220/list/p1/Cables-PSU_Cables-2024-Pin_Adapters-Page1.html (http://www.frozencpu.com/cat/l3/g2/c413/s1220/list/p1/Cables-PSU_Cables-2024-Pin_Adapters-Page1.html) Not heard of grounding issues, I'll be using the TX650 to power the board +2x5850's +5750 and an oem 300w psu to push a single 5850 until a 1000+ watt psu is ordered. Still the ground differential bothers me quite a lot. Anyone ever tested this? Or how are 3-4x 5970 Rigs possible? Title: Re: Dual PSU, will it work? Post by: Nicksasa on May 16, 2011, 08:42:40 PM I believe that connecting the green wire on the PSU's motherboard connector to any of the black wires will fool the PSU into thinking that you've turned the motherboard (that isn't there) on. You can then use the PSU to power other devices as normal. This, I've done it in the past for my folding setup.Title: Re: Dual PSU, will it work? Post by: djex on May 16, 2011, 11:01:48 PM Same situation here with my Corsair TX650. Its sweeting at 550w at the moment. Thanks for the link, I ordered 3 right away :-)The adapter I have is found here http://www.frozencpu.com/cat/l3/g2/c413/s1220/list/p1/Cables-PSU_Cables-2024-Pin_Adapters-Page1.html (http://www.frozencpu.com/cat/l3/g2/c413/s1220/list/p1/Cables-PSU_Cables-2024-Pin_Adapters-Page1.html) Not heard of grounding issues, I'll be using the TX650 to power the board +2x5850's +5750 and an oem 300w psu to push a single 5850 until a 1000+ watt psu is ordered. Still the ground differential bothers me quite a lot. Anyone ever tested this? Or how are 3-4x 5970 Rigs possible? I know when modding my xbox 360 to solve for the ground differential all I had to do was connect the outer metal casing of the xbox to my PC's metal case. I'm not sure if this would be the same for 2 PSU's but it might be similar. Title: Re: Dual PSU, will it work? Post by: EpicBacon on May 16, 2011, 11:38:12 PM I believe that connecting the green wire on the PSU's motherboard connector to any of the black wires will fool the PSU into thinking that you've turned the motherboard (that isn't there) on. You can then use the PSU to power other devices as normal. This works. I am doing it right now to power a few of my cards. |