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Lexar

Lexar NM620 256GB M.2 2280 NVMe internal SSD

SKU CH-AMSP-DW195

256GB M.2 2280 NVMe SSD with PCIe Gen3x4 interface delivering 3000 MB/s read and 1300 MB/s write speeds using 3D TLC NAND

  • Total capacity256 GB
  • Sequential read speedUp to 3,000 MB/s
  • Sequential write speedUp to 1,300 MB/s
  • Interface typePCIe Gen3 × 4 NVMe
  • Form factorM.2 2280
  • Product typeInternal Solid State Drive (SSD)

Capacity 256GB

  • Sequential read up to 3000 MBps via PCIe Gen3x4 NVMe 1.4
  • Sequential write up to 1300 MBps for faster file transfers
  • Random write up to 240000 IOPS improves multitasking responsiveness
  • 1500000 hours MTBF plus 125TB TBW supports long-term use
  • M.2 2280 form factor fits standard laptop and desktop slots

Lexar NM620 256GB NVMe drive

The Lexar NM620 is a 256GB internal solid-state drive built on a PCIe Gen3x4 NVMe 1.4 interface. Its M.2 2280 form factor fits mainstream laptop and desktop slots. The drive targets PC enthusiasts and gamers who want a noticeable step up from SATA storage.

256GB capacity with 125TB TBW

Sequential reads reach up to 3000 MBps and writes up to 1300 MBps, while 4KB random performance hits 92,000 read IOPS and 240,000 write IOPS. The 125TB total bytes written rating and 1,500,000-hour MTBF give ample headroom for daily workloads, though sustained heavy writes will eventually saturate the 3D TLC NAND.

M.2 2280 build with LDPC error correction

The single-sided board measures 2.25mm high, 22.00mm wide and 80.00mm deep, weighing 9.00g, so it slips into thin ultrabooks without clearance issues. LDPC (Low-Density Parity Check) protects data integrity, and the drive tolerates 1500G shock plus 20G vibration across 10 to 2000 Hz. Active power peaks at 3497 mW read and 3196 mW write within a 0°C to 70°C operating range.

How it compares

Measured against everything we stock in Internal NVMe & SATA SSDs, at today’s prices. Recalculated every night.

Price $93.99
Cheaper than about 74% of the 1,994 comparable items (median $180.49).
Total capacity 256 GB
Lower than about 80% of the 1,368 comparable items (median 1 TB).
Sequential read speed Up to 3,000 MB/s
Higher than about 55% of the 1,180 comparable items (median 2,400 MB/s).
Price per TB $367.15 per TB
Pricier than about 81% of the 1,362 comparable items (median $165.50 per TB).

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Specifications

Product
Brand nameLexar
Product lineNM620
Model nameLNM620 × 256G-RNNNG
Total capacity256 GB
Product typeInternal Solid State Drive (SSD)
Intended useConsumer
Performance
Sequential read speedUp to 3,000 MB/s
Sequential write speedUp to 1,300 MB/s
Random read (4K)Up to 92,000 IOPS
Random write (4K)Up to 240,000 IOPS
Storage
NAND flash type3D TLC
Ports & slots
Interface typePCIe Gen3 × 4 NVMe
Power
Active power drawActive write: 3196 mW
Active read: 3497 mW (Maximum)
Size & build
Form factorM.2 2280
Overall height2.25 mm
Overall width22 mm
Product depth80 mm
Product weight9g
Environment & compliance
Operating temperature range0 °C to 70 °C
Storage temperature range-40 °C to 85 °C
Max shock tolerance1500G
Vibration tolerance10 to 2000 Hz, 1.5 mm, 20G, 1 Oct/min, 30 min/axis (X,Y,Z)
More details
Mean time between failures1,500,000 h

Other versions of this model

2 more in the same range

Questions about this item

Will the 256GB NM620 run on my older motherboard that only has a PCIe Gen3 M.2 slot?

Yes, the drive uses a PCIe Gen3x4 NVMe 1.4 interface and is fully compatible with Gen3 M.2 slots, delivering up to 3000 MB/s read and 1300 MB/s write speeds.

How can I verify the NM620 is performing at its rated 3000 MB/s read and 1300 MB/s write after installation?

Run a benchmark tool such as CrystalDiskMark using the NVMe 1.4 protocol; sequential results should approach 3000 MB/s read and 1300 MB/s write, with 4KB random reads near 92,000 IOPS and writes near 240,000 IOPS.

Does the LNM620X256G-RNNNG include a heatsink or mounting screw, or do I need to buy them separately?

The package contains only the 256GB M.2 2280 SSD itself; any heatsink or M.2 mounting screw must be sourced separately from your motherboard accessories or a third-party kit.

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