Differences between NVMe, AHCI, SATA, PCIe, and M2

2 standard contains variants with up to four PCIe lanes, one SATA 6 Gbs and or one USB port So it is possible to connect PCIe as well as SATA SSDs

As said, NVMe are becoming cheaper atm, if they are on sale you Sorry, don't have a USB SSD to compare to You do not have

nvme slot The seek time for data is ten times faster NVMe can deliver a sustained read-write speed of 2000MB per second, way faster than the SATA SSD III

nvme vs m2 slot Differences between NVMe, AHCI, SATA, PCIe, and M2 · Key Types:​ · SSD Protocols and Speeds:​ SATAAHCI