I'm working with a Corsair RM750e power supply and I'm running into a bit of a port shortage. I just bought an Intel Arc B580 GPU, which needs a single 8-pin connector. However, I've already used up the last PCIe port on my PSU for Corsair's iCUE LINK System Hub, which controls my RGB. The only available connections left are a SATA/PATA port and a 12V-2x6 port. I'm wondering if I can use the 12V-2x6 to dual 8-pin cable that came with my PSU. My plan is to plug the 12V-2x6 into the PSU and then connect one 8-pin to the B580 and the other to the iCUE LINK hub. Will this work? Is it a safe solution or could it cause damage to my GPU or even my setup?
2 Answers
That setup should technically work, but I'm a bit puzzled since usually you wouldn't need to use a cable like that. What else do you have plugged into your PCI-E ports? Just the B580 and the iCUE Link? Also, what CPU are you using?
Check the power consumption of both the GPU and the RGB hub against the spec limits of that port. Just because a plug fits doesn't mean it can handle the load. It's a good analogy like plugging multiple phones into a wall outlet. The real limitation comes from the power draw, not just the connectors. Since the B580 is a budget GPU, it might have more headroom. The iCUE is likely minimal since it's just for LEDs, but still double-check the specs to be safe.

I’ll definitely look into that. My main worry is overloading and damaging something versus just not having enough power to run the devices.