I'm currently building a new PC using a Corsair RM750e power supply and a Radeon RX7700XT graphics card. The issue I'm facing is that the PSU only came with one PCIe to PCIe cable, but I also have a 12VHPWR cable that connects to two PCIe connectors. Since my PSU has a 12VHPWR connector, is it safe to connect the 12VHPWR to the PSU and the two PCIe ends to the graphics card? I've only seen the 12VHPWR being connected to GPUs, not PSUs, so I'm a bit confused. Thanks for any advice!
2 Answers
It looks like you should have enough cables to connect your setup properly. Typically, the PSU documentation specifies that you should have one PCIe 8-Pin (6+2) cable with one connector and one with two connectors. However, if your PSU has the 12VHPWR feature, you can definitely connect the 12VHPWR to it and then use the two PCIe connectors for your GPU. Just make sure that the connection makes sense based on the cables you're using; sometimes, the connectors are keyed differently—so be careful with that!
I’d suggest sticking to the cables that were designed for your PSU. While the 12VHPWR to PCIe setup can work theoretically, the 8-Pin connectors at the PSU end might not be compatible with the 6+2 configuration if they're keyed differently. It’s always safer to go with the standard setup as per the PSU's instructions. Just my two cents!
Definitely a good point! Following the manufacturer's cabling instructions can save you from future headaches. I’d recommend reaching out to Corsair support if you have any doubts.
Yeah, I agree! As long as your PSU is designed to handle the 12VHPWR connection with those outputs, you should be fine. Just double-check that everything fits properly before you power it on.