pcie 4.0 on 3.0 slot
Will new RTX 3080ti cards require a PCIe 4.0 slot to work? - Video ...
Will a PCIe 2.0 work in a PCIe 3.0 slot? ... It'll surely be a bottleneck if you're using a PCIe 3.0 or 4.0 card in a PCIe 2.0 slot.
Mainboard PC MSI PRO Z690-A DDR4 - MemoryZone
1 x PCIe 4.0/3.0 x16 slot (supports x4 mode). 2 x PCIe 3.0 x16 slots (support x4 mode). 1 x PCIe 3.0 x1 slot. Storage. Supports 3 x M.2 slots and 4 x SATA 6Gb/s ...
MAINBOARD ASUS PRIME Z690-P D4
Can I Use a PCIe 4.0 Graphics Card in a PCIe 3.0 Motherboard Slot?