I've been looking into the right way to connect PCIe cables for my GPU, a 6750 XT, and I've come across some conflicting advice. I've read that it's better to use two separate PCIe cables rather than a single pigtailed one because the 6750 XT can draw up to 300W, and a single pigtailed cable is only rated for 150W. I'm okay with running two cables, but they look messy with both pigtails just dangling in my case. How do others handle this situation? Do you recommend any specific cables that aren't pigtailed?
5 Answers
If you're looking for an alternative, you could consider buying PCIe cables that don't have pigtails (just ensure compatibility with your PSU), or you could also opt for adapter cables.
What's the exact model of your PSU? If it's a modern, high-quality unit—especially one that's ATX3 certified—then you should have no problem with just one cable. However, for older or less reputable models, you might want to use separate cables just to be safe.
The concern about single pigtailed connectors is interesting. While it's true that the 6+2 PCIe connector itself only supports up to 150W, the cable it's connected to can usually handle much more. This advice came from older power supplies that struggled with high transient loads from top-tier GPUs, but with modern power supplies, your 6750 XT should work fine with a single pigtail. The newer ATX 3.x PSUs are designed to handle these demands.
Thanks for clarifying that! I appreciate the insight.
Not only that, but back then there were issues with older low-quality power supplies and extensions that made it a good practice to use separate cables. But most modern PSUs can handle it just fine.
One simple solution to tidy up those cables is to zip-tie the pigtail connector to the main cable. It helps keep everything neat while making it less of an eyesore inside your case.
For your setup, you will likely be pulling about 250 watts max. Each 6+2 pin can handle 150 watts, and the PCIe port provides another 75 watts, so the pigtail is actually only pushed to deliver an additional 25 watts. For high-end cards, it's generally wise to avoid pigtails, but with solid PSUs, it should be okay.
My PSU is an MSI A850L. So it should be fine with just the single cable, right?