I recently upgraded my GPU to a 5070TI from a 4060. My CPU is an i9-13900K, and I'm currently using a PSU model HP1-J600GD-F12S. It came with an 8 to 16 pin adapter, but my PSU only has one 8-pin line with two daisy-chained connectors. I've plugged both of them into the adapter, but the GPU fans only spin briefly when I power on the PC, and I only see a faint light behind the Gigabyte logo on the card. The GPU seems securely installed along with the power cable. Am I stuck needing a new PSU? Also, what's a good PSU to support this GPU?
2 Answers
Yeah, I see what you mean about needing a new PSU. When I upgraded, I went for a high-tier PSU that can handle newer GPUs, and it made a big difference. Remember, brands like Corsair or EVGA have great options, so just look for one that’s rated Tier A.
It looks like your PSU might not be up to the task. For a system with a 13th gen i9, you should really be looking at at least a 750W PSU. It’s best to find one with a native 12V-2x6 cable to avoid any issues. Checking the PSU tier list can help you choose a reliable one.

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