Is a MacPro3,1 x16 slot PCIe or ?

While every PCIe card is backward compatible, if you put a PCIe SSD card into a slot, the performance can only achieve rates 2

Crucial T705 PCIe® Gen5 NVMe™ SSD! Fearless speed is waiting Shop now 2 PCIe NVMe SSDs not only for recently released compatible systems, but also

pcie 4 in pcie 3 slot A PCIe x1 slot has one lane and can move data at one bit per cycle A PCIe x2 slot has two lanes and can move data at two bits per cycle (and so

pciex16 slot PCIE x16 x8 is good enough for up to a 2080Ti under both Linux and Windows Estimated upcoming 5000+ shadercore gpus might be limited