What is PCIe ?

No, this card does use 32 actual lanes from the host X32 is in the specs, it just obviously doesn't exist on consumer boards

PCI Express® Version: PCIe® Native PCIe® Lanes : 28 , 24 Additional Usable PCIe Lanes from Motherboard X670E 12x Gen4 X670 12x Gen4

pcie 4 gpu in pcie 3 slot I knew it had this X32 slot when I bought it just by the product images, but I guess I figured it was a standard type of slot in the server

pcie cem slot PCI Express® Version: PCIe® Native PCIe® Lanes : 28 , 24 Additional Usable PCIe Lanes from Motherboard X670E 12x Gen4 X670 12x Gen4