The Lexar NM620 is a solid-state drive in the M.2 2280 form factor, launched on March 10th, 2021. It is available in capacities ranging from 256 GB to 2 TB. This page reports specifications for the 2 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 IG5216 (Shasta+) from InnoGrit, a DRAM cache is not available. Lexar has installed 96-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 soaked up more quickly. The cache is sized at 208 GB, once it is full, writes complete at 800 MB/s. Copying data out of the SLC cache (folding) completes at 300 MB/s. The NM620 is rated for sequential read speeds of up to 3,300 MB/s and 3,000 MB/s write; random IOPS reach up to 300K for reads and 256K for writes.
At its launch, the SSD was priced at 125 USD. The warranty length is set to five years, which is an excellent warranty period. The TBW rating for the Lexar NM620 2 TB is unknown.