PCIe Motherboard

Apparently the cross-compatibility and quality are quite variable PCIe = gen3 seems easier than gen4, though, and for your needs it sounds

PCIe Motherboard PCIe slots feature the same pin layout and thus are forwards and backward-compatible However, a PCIe card slotted into a PCIe slot will

Apparently the cross-compatibility and quality are quite variable PCIe = gen3 seems easier than gen4, though, and for your needs it sounds

pcie x1 in x16 slot Supports up to 3 slots GPU at vertical mounting position to showcase in A3-mATX Includes a PCIe riser cable for seamless connectivity A3-mATX Vertical GPU

You don't need PCIe support to run Nvidia's RTX 3000 series or AMD's Radeon RX 6000 range, and the performance increase isn't as noticeable

pcie slot pinout It's worth noting that the PCIe standard is backwards compatible, so you can, for instance, use a PCI-e graphics card in a PCI-e slot without issue,

3 13:17 - DOOM Eternal 13:42