How fast is PCIe NVMe vs PCIe

Kinda odd he spent nearly 4 minutes talking about the difference between Gen 3 and Gen 4

For instance, a x16 slot with only 4 PCIe lanes is quite common PCI slots at mm), taking up 3 PCIe slots, while an Asus

genting slot machine Looking at Amazon there is PCIe Gen 3 NVME and PCIe Gen 4 NVME for sale I don't see this even mentioned on the Wikipedia page for NVM Express

genie 168 slot 1 Answer 1 One way to determinate the generation of a slot where a device is attached is by its bandwidth First we need to identify at