pcie x4 in x8 slot: Mainboard ASRock X570 Taichi - LDTech. motherboard - Is a half-length PCI Express x8 Gen 3 card compatible ... . What Are PCIe Slots & Their Uses?.
On the X570 Taichi is three full-length PCIe 4.0
slots operating at x16, x8/x8, and x8/x8/x4, with two
PCIe 4.0 x1 slots.
Essentially I want to see how is a half-length x8 different from an x4 PCIe
slot?
PCIe slots come in different sizes, with the most common being PCIe x1, PCIe x4, PCIe x8, and PCIe x16, which indicate the number of lanes available for data transfer.