ATX 3.0 and 3.1 PSU cables

[Skymaster4]

Hi, I have two identical PSUs "Asus tuf gaming 750g 750w modular", the only difference is that one is 3.0 and the other 3.1 ATX standard.
Ookay I know the difference is that 3.0 has 12VHPWR  while 3.1 has 12v-2x6 PCB header on PSU side, and the cable (12VHPWR/12v-2x6) is the same, but what about other standard non 5.0/5.1 cables/headers coming with the PSUs, for example 24 pin MB, esp/cpu, pcie PCIE 4.0, SATA, are they the same on both PSU 3.0 and 3.1?

To clarify can we use PSU ATX 3.1 cables on same brand/model/wattage PSU 3.0?

[Silent_Scone]

Hi @Skymaster4 

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@Skymaster4 wrote:

Hi, I have two identical PSUs "Asus tuf gaming 750g 750w modular", the only difference is that one is 3.0 and the other 3.1 ATX standard.
Ookay I know the difference is that 3.0 has 12VHPWR  while 3.1 has 12v-2x6 PCB header on PSU side, and the cable (12VHPWR/12v-2x6) is the same, but what about other standard non 5.0/5.1 cables/headers coming with the PSUs, for example 24 pin MB, esp/cpu, pcie PCIE 4.0, SATA, are they the same on both PSU 3.0 and 3.1?

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Yes, apart from the 12VHPWR vs. 12V-2x6 difference, the standard non-PCIe 5.0/5.1 cables and connectors (such as the 24-pin motherboard, EPS/CPU, PCIe (6+2 pin), SATA, and Molex) should be identical.

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@Skymaster4 wrote:

To clarify can we use PSU ATX 3.1 cables on same brand/model/wattage PSU 3.0?

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Despite being the same brand and most likely pin-out, I wouldn't recommend mixing PSU cables between models.

[Skymaster4]

Hi Silent_Scone

Thanks for the quick reply, i'm building a new PC configuration, so i'm left with one PCI-E cable (8pin PSU side - 6+2 GPU) from an ATX 3.1 power supply that i'm not using.

I have a rx 7700 xt GPU, so i thought i'd add that cable from 3.1 PSU as a secondary since I already have one of the same type that comes with a 3.0 power supply since that graphics card has two 8-pin headers.

Both power supplies already come with one "PCI-E 16-pin to 8-pin-8-pin" - (12WHPWR PSU - 2x6+2 GPU), which I could use, but to be honest, I want to avoid the problematic 12+4 (12WHPWR) if possible, so I thought of using two separate (8pin PSU - 6+2 GPU) cables between psu and gpu.

But as you said, it is not advisable to mix those cables between two identical PSUs even though the only difference is the ATX standard.