PSU and GPU may not work together.
PSU and GPU may not work together.
Hello, I'm just setting up an account for this purchase. The specs are listed below. I recently acquired an RX 6600 XT to upgrade my setup. Since I don't spend much on my PC, it's mainly for work, and my previous GPU was a 1050ti. Issues arose during installation when I noticed my PC wouldn't power on. The PCI-e cable was properly connected to both my PSU and card, fitting snugly in the slot. My 1050ti works fine after reinstall, but since it doesn't require a PCI-e cable, it seems the problem might lie with my PSU not supplying enough power. I've tried switching to a different PCI-e 8pin slot on my PSU, using another end of the cable for the GPU (which is an 8pin to dual 6+2 pin), and even booting with the GPU in place but without power through the cable—this worked only for booting. The 6600 XT needs at least 500W, and my PSU is a 750W unit, so any additional input would be ideal. Any advice would be greatly appreciated. Thank you.
The power supply and graphics card are compatible. You're using the PCIe cable provided with the Cooler Master power supply, not another one.
I was considering this. I’m using the PCi-e cable from that Amazon link you shared. Since I’ve moved it several times, I’m worried the original might have been lost during transport. I think it could be the issue, but I’m not sure where to get one for my specific PSU.
Avoid combining wires from various manufacturers. Handle connections from different power configurations with care—they’re secured differently on the unit. Use a cable specifically made for your power source, not just any Corsair adapter.
It seems the setup isn't functioning because power supply modular cables aren't uniform across brands. Corsair cables won't fit a Cooler Master PSU. Consider contacting Cooler Master support for a replacement. You might also find compatible cables on eBay, though they must match the exact PSU model. Some brands offer variations, and custom makers like cablemod could produce tailored cables, but expect a higher cost (around $20 per cable). Are you comfortable with a DIY approach? If so, use a multimeter to test voltage at the PCIe plug pins. PCIe connections typically require +12V and GND, with most PSUs providing four GND pins on one side and three +12V on the other. For Corsair cables, reverse the pins on the PSU connector before flipping them. After removal, verify the GPU side using a multimeter to confirm 12V and GND are correctly positioned. The component side usually has GND on the tab side and 12V on the opposite side.