Articles on: 12VHPWR & 12V-2X6

Do you have a 12VHPWR (PSU) to 3 x 8-pin PCIE (GPU) cable?

Sorry, such cable does not exist.

Technically you cannot use a 12VHPWR port (from PSU) to split out 3 x 8pin PCIE (for GPU), because there are only 6 x +12V leads (pin 1 to 6) from a 12VHPWR port.

12VHPWR Spec

But you will need 9 x +12V leads for 3 x 8pin PCIE (each 8pin PCIE requires 3 x +12V).

PCIE Spec

This is why you cannot power a 3x8pin PCIE GPU from a 12VHPWR PSU port. You should use 3 pieces of regular 8pin to 8pin PCIE cables for this type of GPUs.

However, if you only need 2 x 8pin PCIE (for the GPU), you can use 12VHPWR to 2 x 8pin PCIE cables. They will work perfectly fine because a 12VHPWR port provides 6 x +12V, and dual 8pin requires 6 x +12V.

ATX 3.0 PCIe 5.0 600W 12VHPWR 16 Pin to Dual 8 Pin PCIE Power Cable

ATX 3.0 PCIe 5.0 600W 12VHPWR 16 Pin to Dual 8 Pin PCIE Adapter Cable

Updated on: 06/02/2024

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