Hey everyone, I've got a bit of a puzzler here. I'm using an RTX 5080 along with a Ryzen 9 9800X3D on a B650 Eagle AX motherboard, which should only support PCIe 4.0. However, I recently noticed that the option for PCIe 5.0 showed up in my BIOS, so I enabled it just to see what would happen. Now, GPU-Z is indicating that it's running at *PCIe x16 5.0 @ x16 5.0*. Can anyone shed some light on this? Is my GPU really operating at PCIe 5.0 speeds, despite the motherboard being constrained to 4.0, or is this an error in reporting?
1 Answer
It's likely that Gigabyte enabled PCIe 5.0 support for some B650 boards in later BIOS versions. They initially included it in the early versions, but there was reportedly some pushback from AMD about it for the design guidelines. So if you have a newer BIOS, that could explain it! You might be running PCIe 5.0 for your GPU, which is great for future compatibility.
Thanks! That makes sense, so it's a bit of a hidden feature then. Should I be worried at all?