I already own a Corsair TX850M 850W 80+ Gold power supply and am considering a Gigabyte Radeon RX 9070 XT. The wattage seems sufficient, but I'm unsure whether the PSU has enough PCIe power connections for a card that uses three 8-pin connectors. Will this setup work, and where should the GPU cables be connected on the power supply?
1 Answer
Yes, 850W should be enough for the RX 9070 XT, assuming the rest of the system is fairly typical. Use the original PCIe/VGA cables that came with the TX850M. Connect them to the modular sockets labeled for PCIe or CPU/PCIe on the PSU, then plug the 6+2-pin ends into the graphics card. Do not use the CPU/EPS cable, even though it may look similar. Ideally, use three separate PCIe cables rather than relying on one cable with multiple connectors.
I wasn’t sure where the cables plug into on the PSU itself. I’ll look for the sockets labeled PCIe or CPU/PCIe and make sure I’m using the PCIe cables, not the EPS cable.