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Black Lexar NM790 2TB M.2 2280 SSD single-sided circuit board

Lexar

Lexar NM790 2TB internal SSD M.2 2280

SKU CH-4E8S-5CYKM

2 TB PCIe 4.0 NVMe drive delivering up to 7400 MB/s read and 6500 MB/s write with 1500 TBW endurance

  • Sequential write speed3,700 MB/s
  • Interface typeNvme
  • Form factorM.2
  • Product typeInternal Solid State Drive (SSD)
  • Connection protocolNVMe
  • ConnectionNVMe
  • Reads hit 7400 MB/s for faster game loads
  • Writes reach 6500 MB/s to speed large-file saves
  • 1500 TBW endurance rating protects heavy workloads
  • 40 % less power draw extends laptop battery life
  • HMB 3.0 uses system memory for smoother transfers

2 TB PCIe 4.0 NVMe drive

This Lexar NM790 is a 2 TB internal solid-state drive built for gamers, professionals and creators who need fast storage in an M.2 2280 slot. It uses the NVMe protocol over a PCIe 4.0 x4 link and fits laptops and desktops with a single-sided design. The drive is also compatible with PlayStation 5 expansion.

PCIe 4.0 x4 interface limits

The PCIe 4.0 x4 bus caps theoretical throughput near 8 GB/s, so real-world sequential speeds top out at 7400 MB/s read and 6500 MB/s write on this drive. Sustained writes settle at 3700 MB/s once the SLC cache fills. Host Memory Buffer 3.0 uses system DRAM to keep latency low without an onboard DRAM cache.

2 TB capacity with 1500 TBW endurance

The 2 TB volume holds large game libraries, project files and media caches with room to spare for everyday workloads. Rated endurance of 1500 TBW means the drive can absorb heavy write cycles over its lifespan. Power draw runs up to 40 % lower than DRAM-equipped Gen 4 SSDs, helping laptop battery life.

How it compares

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

Price $283.99
Pricier than about 66% of the 1,994 comparable items (median $180.49).
Sequential write speed 3,700 MB/s
Higher than about 66% of the 1,173 comparable items (median 1,700 MB/s).

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Specifications

Product
Brand nameLexar Media
Product line790 Gen4 × 4
Model nameLNM790 × 002T-RNNNG
Part numberLNM790 × 002T-RNNNG
Product typeInternal Solid State Drive (SSD)
Performance
Sequential write speed3,700 MB/s
Storage
Cache memory2 unknown modifier
Connectivity
Connection protocolNVMe
Ports & slots
Interface typeNvme
ConnectionNVMe
Size & build
Form factorM.2
Overall height8.0 in x 2.2 in x 0.2 in
Overall width8.0 in x 2.2 in x 0.2 in
Product depth8.0 in x 2.2 in x 0.2 in
In the box
Included items1 year technical support

Questions about this item

Should I choose the 2TB NM790 or a smaller capacity?

The 2TB model delivers up to 7400 MB/s read and 6500 MB/s write with 1500 TBW endurance, giving the highest sequential speeds and write lifetime in the NM790 range.

What do the 7400 MB/s read and 6500 MB/s write figures mean once the drive is installed in my PC?

Those are peak sequential speeds over PCIe 4.0 x4; real-world game loads and file copies will be lower but still well above PCIe 3.0 limits.

Does the PCIe 4.0 x4 interface cap performance on a PCIe 3.0 motherboard?

Yes, the drive will run at PCIe 3.0 x4 speeds on an older board, limiting sequential throughput to roughly half the rated 7400 MB/s.

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