Question 18 pin to 24 pin?

Sep 22, 2021
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Hello out there! I am trying to power a second graphics card but my 1200w power supply doesn't have enough pcie ports. I bought a second 500w power supply to power just the gpu and a 24pin adapter cable for dual power supplies. The 1200w psu has a 18pin power port however so will not work with the 24 pin adapter. Any advice at all would be extremely appreciated!
 

lvt

Respectable
Apr 19, 2021
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Can you explain more in details?

The 1,200W PSU is the main PSU and the 500W is auxiliary PSU for the GPU, right?

What was the 24-pin adapter used for? The motherboard?
 

--SID--

Commendable
Jan 23, 2021
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I am trying to power a second graphics card but my 1200w power supply doesn't have enough pcie ports.
What make and model 1200w PSU? A quality 1200w PSU used to have 8 PCI-e connectors!
I bought a second 500w power supply
Make and model?
The 1200w psu has a 18pin power port however so will not work with the 24 pin adapter.
I guess the pinout is different. You have to measure the pinout on the 18p connector and compare it to the pinout of the 24p connector.
 

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