I've got an ASUS Prime 9070 XT GPU and a Corsair SF750 power supply. The problem is my PSU only came with 2 PCIe 8-pin (6+2) cables, but my GPU has 3 slots to fill. Is it okay to just use 2 of the 8-pin connectors for now?
2 Answers
Haha, I was just about to ask something similar for my 7900 XTX! But from what I've seen, running it on just 2 cables isn’t the best idea—it's probably not safe. Some folks mentioned using an undervolt profile if you have to do that, but I'd still be cautious.
Regarding the Corsair PSU, it provides 300W per 8-pin connection, so using 2 should give you 600W, which is typically enough for most GPUs. However, it would be ideal to use all 3 slots if possible. If you’re in a bind, you could try 1 dedicated cable plus a daisy-chained one from the other cable.
I totally get your concern! Just keep in mind that under heavy load, it might not perform well. Better safe than sorry!