> I'd also be interested in what difference there is running a PCIe 4.0 graphics card with only 8 lanes on 4.0 vs 3.0 it's measurable, but not very significant

> I'd also be interested in what difference there is running a PCIe 4.0 graphics card with only 8 lanes on 4.0 vs 3.0 it's measurable, but not very significant. take a look at these charts: https://www.techpowerup.com/review/nvidia-geforce-rtx-3080-pci-express-scaling/27.html https://www.techpowerup.com/review/nvidia-geforce-rtx-3080-p... (pcie 2.0 x16 is equivalent to or slightly worse than pcie 3.0 x8)