What is a PCIe SSD?

PCI-E NVME in PCI-E performance ardForum nvme pcie 4 0 in 3 0 slot reinum58158702e1 said: Ciao, ho installato un ssd samsung 980PRO sulla mia scheda madre X570 GAMING PLUS nello slot , niente sia in nvme pcie slot Not asked, but nice to know: A PCI-e v3 card will run fine on an PCI-e v2 slot

nvme m2 slot You're referring to NVME based M2 SSDs, correct? But yes if the SSD is PCIE spec then of course the speed will be less when used on PCIE