I recently upgraded my power supply from a Corsair RM750x to a Be Quiet Power Zone 2 1000W while using an RTX 3070. However, I noticed that my old PCIe 6+2 cables don't seem to fit the new PSU properly. My new power supply didn't come with any PCIe cables, but it did include a 12-pin VGA cable that splits into two 6+2 pins. I'm unsure if I can use these VGA cables for my GPU, given the labeling. What should I do?
4 Answers
It's really important not to mix cables from different power supplies unless you're absolutely certain that the pinouts match; otherwise, you could seriously damage your hardware. Use the new cables that came with your Be Quiet PSU. The "VGA" labeled cables are what you should use for your GPU, despite the outdated terminology.
Mixing up cables can lead to disaster, even a fire! Just stick with the VGA cables your new PSU provided for your GPU; those are definitely what you should be using.
Honestly, unless you're planning a big upgrade like moving to a 4090 or something, swapping out PSUs might not be necessary. But if you are upgrading in stages, just use the cables that came with the new PSU; it's safer.
You're right to be cautious! Your old cables aren't compatible, and using them could potentially break something. Make sure to remove all the Corsair cables and only use the Be Quiet ones included in the box. The Power Zone 2 1000W should have two cables with three PCIe 6+2 plugs, so those are the ones you need to install.
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