The Lexar NM620 is a solid-state drive in the M.2 2280 form factor, launched in 2023. It is available in capacities ranging from 256 GB to 2 TB. This page reports specifications for the 1 TB variant. With the rest of the system, the Lexar NM620 interfaces using a PCI-Express 3.0 x4 connection. The SSD controller is the MAP1202A-F1C Cougar from MaxioTech, a DRAM cache is not available. Lexar has installed 176-layer TLC NAND flash on the NM620, the flash chips are made by Micron. Please note that this SSD is sold in multiple variants with different NAND flash or controller, which could affect performance, the "Notes" section at the end of this page has more info. To improve write speeds, a pseudo-SLC cache is used, so bursts of incoming writes are handled more quickly. The NM620 is rated for sequential read speeds of up to 3,300 MB/s and 3,000 MB/s write; random IO reaches 300K IOPS for read and 256K for writes.
At its launch, the SSD was priced at 160 USD. The warranty length is set to five years, which is an excellent warranty period. Lexar guarantees an endurance rating of 500 TBW, a relatively low value compared to other SSDs.