
Help: PSU Cable (Mixing)
I’ll try keep this short and include pictures for context.
I’m running the following setup:
GPU: RX 7900 XTX (requires 3× 8-pin PCIe power)
PSU: Cooler Master MWE 850W Gold V2
The issue is that my PSU only came with 2× native PCIe (6+2) cables, but my GPU requires 3 inputs and recommends not daisy-chaining, which I have but I'm having major instability issues because of it.
I do have a spare PCIe cable from another PSU, but it is not originally from the MWE 850W Gold v2
What I noticed:
- The GPU-side connector (6+2 PCIe) looks standard on both cables
- The PSU-side connector has a different “dummy pin” layout between the original and spare cable
- Right: is from MWE Gold V2
- Left: Cable from Random PSU
My question is:
Is it fine to mix these? , or does it matter where the dummy pin is missing