I'm curious about the performance impact of riser cables in a PC build, specifically for a PCIe 5.0 cable. If I were to guess, would there be a loss of 1-2 fps, or is that too much?
4 Answers
There shouldn't be a performance difference at all—it's kind of like using a digital signal cable for your TV. However, if the quality of your riser cable is poor, you might run into issues like graphical artifacts or crashes. I had a problem with my B660i and a PCIe 4.0 GPU using a low-quality riser cable included with my case. I had to upgrade to a certified PCIe 4.0 riser to avoid those issues.
Using a riser cable itself won't impact performance as long as you're using the proper version. Between PCIe 4.0 and 5.0, the difference is negligible. Just keep in mind that cable length can affect signal integrity, but you’d need really long cables to see any issues. There’s a great video testing this on YouTube from a while back.
Adding to what GamerGuy77 mentioned, I've noticed some stuttering from using riser cables due to signal integrity concerns. A poor-quality cable can exacerbate these issues, leading to performance dips.
Your riser cable's quality is crucial for maintaining signal integrity. If it's subpar, it can cause issues such as graphic glitches or crashes. It's all about making sure that your setup is up to par to handle those PCIe speeds.

Thanks for sharing! The case claims to include a PCIe 5 cable, so hopefully that holds up!