What is the difference between PCIe Gen 3 and PCIe Gen 4?

What is the difference between PCIe Gen 3 and PCIe Gen 4? nvme gen 4 in gen 3 slot My laptop has a gen 3 slot First of all, I know that a PCIe 4 SSD NVMe will be running at gen 3 speeds and bottlenecked by the PCIe 3 slot But nvme vs m2 slot difference I was wondering if I could use Nvme gen4 on a gen 3 board ? I think my board only has one slot, so I may want to upgrade

nvme vs m2 slot difference Gen3, Windows boot time, games launch time, File copy NVMe Gen 3 vs NVMe Gen 4

nvme slot types Your notebook's NVMe slot is PCIe Gen 3 While a Gen 4 SSD will work, it will only run at the max speed allowed by the Gen 3 slot, which is The WD Black SN850X is something of a last hurrah for Gen 4 SSDs, and it's still the best overall NVMe drive out there right now Read more