Missing a cable for a Corsair CX450M
Missing a cable for a Corsair CX450M
Hi,
I’m trying to power a GPU using a PSU Corsair CX450M for my Geforce GTX 970. It seems I’m missing a cable. The GPU needs an 8-pin and a 6-pin connector, but I only have one 8-pin (PSU) connected to a split 2x (6+2pin) socket. Connecting it this way doesn’t make sense since both 2 and 3 pins come from the same PSU port. I’m wondering if an extra 6-pin (PSU) to a 6-pin PCIe slot would work. Is this PSU compatible with the GPU?
No, it's not necessary for a 6-pin connector. The typical connectors use 6+2 pins. You can utilize all eight pins in one socket and only six by folding the two-pin section aside, as shown in your second image.
Thanks for the question.
The GPU has two sockets because they serve different purposes—power delivery and data transfer. Even though all power comes from the same 8-pin connector, the sockets handle separate functions like voltage regulation and communication with the motherboard.
The cable intended for the PSU is built to provide adequate power to both connections.
The PSU is quite old. If you follow the suggested path of using a separate harness from the PSU to the device, refer to the provided chart; you can find the compatible cable there. Alternatively, check the other links for guidance. For newer units, it should work fine unless you're trying to power high-end cards or encounter issues with your GPU.
I didn't notice it on the brand specification and requirements page. However, using a PSU watt calculator during the setup process showed a 273W output (including the GPU).
Techpowerup mentions you can use a 300W unit. An older PSU that's been used with other devices will produce less power now than when it was new, which is why I inquired about its age and performance over time.