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Topic: Different PSUs for different GPUs (Read 1507 times)

full member
Activity: 142
Merit: 100
June 24, 2011, 07:51:55 AM
#9
I believe the green and black wires need to be connected on the 2nd PSU, although I've heard Dellis different. Just ground the 2 PSUs.
hero member
Activity: 792
Merit: 1000
Bite me
June 24, 2011, 07:45:38 AM
#8
OK....
I've got a Dell 9200 [non standard PSU or so I'm told]
and I need to power 2 GPU's from another PSU
Which leads do I poke [I mean join]
newbie
Activity: 19
Merit: 0
June 24, 2011, 07:35:35 AM
#7
It's very easy to do.  It just takes two wires kinda jammed in the ATX connectors and mine is working fine.
I have both PSU's connected to the same power strip so the ground is shared.  It's been stable and having no problems.
newbie
Activity: 8
Merit: 0
hero member
Activity: 711
Merit: 500
June 23, 2011, 09:27:59 AM
#5
Well when I did it (probably overkill), I cut the ATX off the cheaper second psu, wirenutted all of the grounds ( black ones) and then connected it to a ground on the host PSU, and then I connected the power circuit a green wire (google it) together on both so they both boot
newbie
Activity: 27
Merit: 0
June 23, 2011, 09:07:26 AM
#4
Yes that was actually the only problem i was thinking about , differences in the grounds voltages. In theory there shouldn't be any difference , in reality it's possible.  How can i connect the two grounds. Is the case of the psu connected to it's ground ?
hero member
Activity: 711
Merit: 500
June 23, 2011, 08:57:28 AM
#3
Just make sure you ground the second powersupply to the original or it will kill you gpu and MOBO
newbie
Activity: 38
Merit: 0
June 23, 2011, 08:00:30 AM
#2
Its no problem, takes about 1 minute. If you know what connections are required, you can DIY it, but I'd recommend getting one of those adapters for the 20/24pin lead.
newbie
Activity: 27
Merit: 0
June 23, 2011, 07:00:22 AM
#1
I'm thinking about buying a new GPU that i would add to my computer. The problem is that my PSU can't handle 2 GPUs so i thought about buying a new psu for the second GPU . Theorically there shouldn't be any problem , but has anyone tried that in practice? ?
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