Performance - Storage USB 3.2 Gen2 and NVMe M.2
USB 3.1 / 3.2 performance
You are looking at a Crucial X8 1TB USB 3.2 Gen2 flash drive with today's tested motherboard. It is one of the faster external storage units available on the market and makes USB 2.0 at 25~30 MB/sec look rather pale in comparison. That is the maximum performance for the USB stick right there.
Crucial X8 1TB USB 3.2 Gen2 (10 Gbps) Flash drive
NVMe SSD Storage Performance (PCIe Gen 3)
M.2 brings small form factor add-in SSDs to our PC platform at blazing fast speeds. There is an abbreviation for that, NGFF (Next Generation Form Factor). It is not just that though, SATA3 has not been amongst us for that long, but the SSDs evolved in a very fast manner, making SATA3 already a bottleneck for current generation SSDs as SATA3 SSDs end at roughly 550 MB/sec in terms of read/write performance. Original M.2 PCI-E SSDs are merely small form factor SSDs that communicate over your PCI Express lanes. M.2 links directly to your PCIe lanes and, as such, is an interface with much more available bandwidth. You can expect performance in the upper 2,500 MB/sec range even reaching 3,000 MB/sec with these products over NVMe 1.3 with PCIe Gen 3.0 and you may double that with PCIe Gen 4.0 and compatible devices.
Samsung 970 EVO PLUS M.2 2TB NVMe SSD (PCIe Gen3)