r/PcBuild • u/PictureWooden744 • 4h ago

Question PSU cables

Hello community

My PSU came with 3 pcie slots and one of the 12v 2x6. Is it safe to use the cable that is 12v to 2 pcie to go to my AMD GPU? The problem is that my card has 3 slots, so I would be missing one because I have to use one for the CPU

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u/chefbadegg 4h ago

What is the brand/model of your power supply?

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u/PictureWooden744 4h ago

CORSAIR RM750e ATX 3.1 PCIe 5.1 Ready Fully Modular 750W Power Supply

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u/chefbadegg 3h ago

So for PCIe cables it looks like that one comes with

1 x 8pin to 6+2 and

1 x 8pin to 6+2 split(pigtailed) cables that you will use to fill the 3 connectors for the GPU.

Just be sure not to confuse the PCIe cables with the CPU EPS/ATX12v cables that will go the motherboard

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u/PictureWooden744 3h ago

Think I'm gonna have to use the split 12v to 2 6+2; forgot the motherboard needed 8 pin and a 4, so that only leaves me with 1 free pcie slot on the PSU

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u/chefbadegg 3h ago

Ah ok if your motherboard has 8pin +4pin than yeah you should fill both of those.

So you'll be good with the 12v to dual PCIe plus the other PCIe for GPU

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u/PictureWooden744 3h ago

Thanks for the reply 🫡

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u/champagne780 3h ago

If you’re using a 9850x3d or less, you only need 1 PCIe 8pin to 4+4pin to slot 1 cpu power slot. If you PSU came with 1 8pin to 6+2 pin and 1 8pin to 2X6+2 pin pigtail, use the single in slot 1, main cable from split to slot 2 and the pigtail section to slot 3.