Lexar NM620 M.2 2280 NVMe SSD 256GB PCle Gen 3×4 LNM620X256G-RNNNG
- Form factor: M.2 2280, the standard size that fits most modern laptops and desktop motherboards with an M.2 slot.
- Capacity: 256GB, good for OS boot drive, key programs, and a few games.
- Interface: PCIe Gen 3×4 using 4 lanes for higher bandwidth than SATA SSDs.
- NVMe 1.4 Standard support means lower latency and better queue depth management vs older AHCI drives.
- Sequential read speed: Up to 3300 MB/s, so large files and games load fast.
- Sequential write speed: Up to 1300 MB/s, solid for installs, file transfers, and everyday tasks.
- Gen 3×4 compatibility: Works in PCIe Gen 4 slots too, but speed will cap at Gen 3 levels.
- Energy efficient design helps reduce power draw, which is useful for laptop battery life.
- DRAM-less design likely, using Host Memory Buffer (HMB) to keep cost down while maintaining responsiveness.
- Ideal as a boot drive: Windows boots in seconds vs a traditional HDD or SATA SSD.
- Thermal management: No built-in heatsink, so airflow or a motherboard M.2 heatsink helps during sustained writes.
- Endurance: Typical for 256GB TLC/QLC drives, around 100-150 TBW. Check spec sheet for exact warranty/TBW.
- 5-year limited warranty from Lexar, standard for consumer NVMe drives in this class.
- Upgrade value: Big jump over 2.5″ SATA SSDs at ∼550 MB/s and massive improvement over HDDs.
- Best use case: Budget builds, laptop upgrades, or as a secondary fast drive for apps and scratch disks.





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