I'm in the process of upgrading my PC build and have run into a bit of a snag with my power supply. I've got a 9950x3d CPU, a 4090 GPU, a Corsair case with Link fans, and an ASUS 870E Hero motherboard. The issue I'm facing is that my Corsair HX1200i power supply only has 6 8-pin PCIe connectors. Since the CPU requires 2 of those and the GPU takes 4, I'm left with no extra connectors to power the Corsair Link hub, which needs a 6-pin PCIe cable. The cable I found in the PSU box is an 8-pin to 6+2-pin connector, but I have no available 8-pin ports. I did see some 6-pin to 6-pin PCIe cables online, but there's only one option, and the reviews are pretty bad, mentioning potential fire hazards. I also considered a 6-pin male to SATA male adapter to use a SATA cable for the Link hub, but I'm worried it can't handle the load from my 7 140mm fans. My last resort would be to buy a larger PSU with more 8-pin slots. What do you suggest?
3 Answers
You actually only need one 8-pin connector for the CPU. The EPS connector is rated high enough to support your CPU's power needs. So, use 4 for your GPU, 1 for the CPU, and that leaves you with 1 to spare for the Corsair Link hub!
Just to clarify, your CPU's power cable and PCI-E cable are different. I'm looking at the Corsair HX1200i and it’s designed for flexibility, so you can use the modular ports for both CPU and PCI-E without mixing them up. Just make sure you're using the right cables from the PSU!
So does that mean I don’t need to worry about mixing cables? That gives me more options!
Yeah, be careful with that adapter. I've heard those SATA to 6-pin PCIe adapters can be risky with high loads. If you can avoid it, do. I'd suggest getting a PSU that has more slots instead of risking damage to your setup!
I agree! It’s always better to play it safe with power to prevent potential fires or damage.
But isn’t everyone saying to use both connectors for that CPU? I read in guides that the 9950x3d needs full power, especially during heavy use!