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krwr12 Jul 2, 2019 @ 2:43pm
Dual graphic cards don't work
So, i have been given a task to make a pc with dual graphic cards. I chose a motherboard which supports Crossfire/SLI and two identical SLI cards. When i installed two cards into the case they were automatically connected by an SLI bridge and i can plug in only a one card to a PSU. The second card doesn't work and doesn't light up, i tested in 3D mark, it is no difference if the second card is into the case or not.

I play hard mode, so interactable objects don't highlight. I only plug a one GPU into a PSU. Maybe i should connect something else. HELP!
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Showing 1-5 of 5 comments
BonPadre Jul 2, 2019 @ 2:50pm 
Originally posted by krwr12:
I only plug a one GPU into a PSU. Maybe i should connect something else. HELP!
maybe you should start playing for a bit in normal ? or go try same build in freebuild ? To at least be comfortable with base game mechanics.

If the GPU's are the same, and one required you to plug it into the PSU, why wouldn't you plug in the second one the exact same way ?
That beeing said, some GPU don't need to be connected to PSU, but that's by far not the majority.

Also, some PSU don't really allow you to plug dual GPU (not enough connections available)
So again, go try your exact same build in freebuild to see what you're doing wrong.
#1
krwr12 Jul 2, 2019 @ 2:58pm 
> maybe you should start playing for a bit in normal ? or go try same build in freebuild ? To at least be comfortable with base game mechanics.

I am comfortable with base game mechanics and with advanced game mechanics for that matter, this is the first time i have problems with hardware connections in hard mode.

> If the GPU's are the same, and one required you to plug it into the PSU, why wouldn't you plug in the second one the exact same way ?

Because i can't, the second card become uninteractable after i plug in the first.

> Also, some PSU don't really allow you to plug dual GPU (not enough connections available)

Oh, this is interesting, i am going to check it out now.
#2
krwr12 Jul 2, 2019 @ 3:02pm 
You are very, very right! The problem was with the PSU limited connectors. But now i have got not enough power :(
Last edited by krwr12; Jul 2, 2019 @ 3:03pm
#3
BonPadre Jul 2, 2019 @ 3:10pm 
Avoid the Silverstone ST--F-PT (550W & 650W) those are annoying due to that. I know there is an other PSU that is annoying, but can't recall which.
#4
krwr12 Jul 2, 2019 @ 3:14pm 
Well, thank you for advice.
#5
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Date Posted: Jul 2, 2019 @ 2:43pm
Posts: 5

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