We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Green M.2 2280 circuit board with black controller and silver NAND chips

Western Digital

Western Digital PC SN740 256GB NVMe internal SSD

SKU CH-FW58-9P5BZ

A 256 GB PCIe 4.0 NVMe M.2 2280 internal SSD delivering up to 5150 MB/s read and 4000 MB/s write for ultra-compact devices

  • Total capacity256 GB
  • Interface typePCI-Express 4.0 x4
  • Form factorM.2 2280
  • Product typeInternal Solid State Drive (SSD)
  • Intended useIndustrial
  • NAND flash typePCIe
  • 256GB capacity fits ultra-compact laptops and handhelds
  • PCIe 4.0 x4 interface enables 5150MB/s sequential read speed
  • NVMe 1.4 protocol delivers 740000 IOPS random read performance
  • 1750000-hour MTBF rating backs long-term reliability
  • Low power draw extends battery life in portable devices

Compact 256GB M.2 2280 SSD

The Western Digital PC SN740 is an internal solid-state drive built in the M.2 2280 form factor. It connects through a PCI-Express 4.0 x4 interface using the NVMe 1.4 protocol and offers 256GB of capacity for ultra-compact devices.

OEM packaging means no extras

This drive ships as an OEM unit in bulk packaging without a heatsink, mounting screw, cloning software or retail box. The bare PCB measures 4.30mm high and 42.8mm wide so it fits tight slots in thin laptops, tablets, mini PCs or handheld consoles.

Suits space-constrained upgrades.

Low power draw and a 1,750,000-hour MTBF make it a good match for portable systems that value efficiency. The rated sustained sequential write of up to 5MBps and 800,000 IOPS random write are modest, so users needing continuous high-throughput writes should consider a different model.

How it compares

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

Price $47.99
Cheaper than about 91% 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).
Price per TB $187.46 per TB
Pricier than about 57% of the 1,362 comparable items (median $165.50 per TB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameWestern Digital
Model namePC SN740
Total capacity256 GB
Product typeInternal Solid State Drive (SSD)
Intended useIndustrial
Performance
Sustained sequential write rateUp to 5 MB/s
Random read (4K)Up to 740,000 IOPS
Random write (4K)Up to 800,000 IOPS
Storage
NAND flash typePCIe
Connectivity
Connection protocolNVMe 1.4
Ports & slots
Interface typePCI-Express 4.0 x4
Size & build
Form factorM.2 2280
Heat sinkWithout HeatSink
Overall height4.3 mm
Overall width42.8 mm
Product depth2.75 in (6.99 cm)
Product weight100g
More details
Mean time between failures1,750,000 h
Ready boostYes

Questions about this item

Will the 256GB PCIe 4.0 x4 NVMe 1.4 drive need a heatsink replacement later?

The drive ships without a heatsink and has no user-replaceable thermal parts; sustained loads rely on the host device's cooling.

What is the first limit reached during sustained writes on the 256GB NVMe 1.4 SSD?

Sustained sequential write tops out at 4000 MB/s, which is the ceiling before any thermal or controller throttling would occur.

How much heat or power does the M.2 2280 NVMe 1.4 drive produce when running all day?

Designed for low power draw in ultra-compact devices, it runs cool enough for fanless ultrabooks, tablets and Steam Deck without active cooling.

More in Internal NVMe & SATA SSDs

Similar items