GPU Power Requirements

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gdmaclew

gdmaclew

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May 20, 2008
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I just took delivery of a new Sapphire Radeon Nitro + RX-580 4GB GPU.
I has 2 power sockets - one 8-pin and one 6-pin.
My PSU (Corsair RM750) has 2 outlets (modular PSU) for PCI-E power, each cable has 2 6+2 pin connectors.
Do I use just one cable and both of its connectors or both cables and one connector from each?
Never had a GPU with 2 power sockets before.
 
Solution
4745454b
I would normally agree, though my Antec 750W green didn't like using a single cable. When I tried using a single cable with my R9 280, it wouldn't work. I had to use one plug from each cable to get it to work. Try it with one cable first, and if that fails, try using a plug from both.
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4745454b

4745454b

Titan
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Apr 29, 2006
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I would normally agree, though my Antec 750W green didn't like using a single cable. When I tried using a single cable with my R9 280, it wouldn't work. I had to use one plug from each cable to get it to work. Try it with one cable first, and if that fails, try using a plug from both.
 
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gdmaclew

gdmaclew

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May 20, 2008
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Thanks both of you.
I've been working with PC's for 35 years and never come across this.
Even though I don't really plan on OC'ing this card I guess I'll use both the 6-pin and 8-pin.
The way things are going, in 10 years the GPU's will need their own PSU.

 
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