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Green rectangular circuit board with gold edge connector and black controller chip

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

  • Device TypeInternal Solid State Drive (SSD)
  • Used ForConsumer
  • Form FactorM.2 2280
  • Capacity256GB
  • Memory Components3D TLC
  • InterfacePCIe Gen3x4 NVMe

Options 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.

Highlights

  • 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

Specifications

BrandLexar
SeriesNM620
ModelLNM620X256G-RNNNG
Device TypeInternal Solid State Drive (SSD)
Used ForConsumer
Form FactorM.2 2280
Capacity256GB
Memory Components3D TLC
InterfacePCIe Gen3x4 NVMe
Max Sequential ReadUp to 3000 MBps
Max Sequential WriteUp to 1300 MBps
4KB Random ReadUp to 92,000 IOPS
4KB Random WriteUp to 240,000 IOPS
MTBF1,500,000 hours
FeaturesTBW: 125TB
High-speed PCIe Gen3x4 interface: 3000 MB/s read and 1300 MB/s write - NVMe 1.4 supported
M.2 2280 form factor
Get 6x the speed of a SATA-based SSD
Ideal for PC enthusiasts and gamers
3D NAND
Features LDPC (Low-Density Parity Check)
Shock and vibration resistant with no moving parts
Power Consumption (Active)Active write: 3196 mW
Active read: 3497 mW (Maximum)
Operating Temperature0°C ~ +70°C
Storage Temperature-40°C ~ +85°C
Max Shock Resistance1500G
Max Vibration Resistance10~2000 Hz, 1.5 mm, 20G, 1 Oct/min, 30 min/axis (X,Y,Z)
Height2.25mm
Width22.00mm
Depth80.00mm
Weight9.00g

Other versions of this model

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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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