How to Properly Connect a 5070 GPU Power Cable?

January 19, 2026 2 answers
Asked by GamerDude42
Hey everyone! I just got my hands on a 5070 Gigabyte Gaming OC, and I'm trying to figure out the best way to connect the power cables. The GPU comes with a 12VHPWR adapter that splits into two, but I've read some concerns about those bundled extensions. So, I decided to buy a different adapter that allows for direct connections to the PSU, featuring a 90-degree angle for better fitment in my small form factor case. You can check it out here: [Cooler Master Adapter](https://www.coolermaster.com/en-global/products/12vhpwr-adapter-cable/). This adapter has 3 x 8-pin connections, but I believe the GPU only needs 2 x 8-pin based on the original splitter. My question is: should I connect 2 of the 8 pins, all 3, or does it even matter what I do as long as I include some? I have an 850W Gold PSU, and I can fit all three cables. Thanks for any advice!

Answers

PowerGuru88
You should connect all the 8 pins if you can! Just remember, the PSU doesnโ€™t push power; the GPU pulls it as needed. Also, make sure youโ€™ve got a Cooler Master PSU, right? Thatโ€™ll help ensure compatibility with what youโ€™re using.

AdapterEnthusiast: Totally agree! I was initially concerned too, but as long as your PSU is compatible, you should be good to go.

GamerDude42: Yes, it's a Cooler Master PSU. Thanks for confirming!

Reply to this answer
CautiousTechie
I totally get where youโ€™re coming from about the 12VHPWR connectors. Thereโ€™s a lot of back and forth on whether theyโ€™re reliable, but for the 5070, youโ€™re unlikely to run into burning issues since it doesnโ€™t draw an enormous amount of power. Just double-check that your PSU is the right model for the adapter you bought because the pinout can vary. If youโ€™re not 100% sure itโ€™s compatible, donโ€™t risk itโ€”stick with the original cable provided!

GamerDude42: Thanks for the heads up! It is a compatible Cooler Master, so I should be safe using this adapter!

Reply to this answer

Add your answer

Answers are reviewed before publication.

Related Discussions