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Small green circuit board labelled Western Digital SN530 256GB M.2 2242

Western Digital

Western Digital SN530 256GB M.2 2242 NVMe PCIe 3.0 internal SSD

SKU CH-AC64-ZF9YW

A compact 2242 form-factor NVMe drive delivering 256GB capacity with sequential speeds up to 2400 MBps read and 900 MBps write for thin laptops and small desktops

  • Form FactorM.2 2242
  • Capacity256GB
  • InterfacePCI-Express 3.0 x4
  • ControllerWestern Digital
  • Max Sequential ReadUp to 2400 MBps
  • Max Sequential WriteUp to 900 MBps
  • Compact 42 mm M.2 2242 form factor fits thin ultrabooks and small-form-factor PCs
  • PCIe 3.0 x4 NVMe interface delivers up to 2400 MBps sequential read for fast boot and app load
  • Up to 900 MBps sequential write accelerates file saves and content creation workflows
  • 170,000 random read IOPS and 120,000 random write IOPS keep multitasking responsive
  • 200 TBW endurance and 1.8 million hour MTBF provide long-term reliability for daily workloads

Compact 256 GB M.2 2242 NVMe drive

The Western Digital SN530 is a 256 GB internal SSD in the M.2 2242 form factor. It connects through a PCIe 3.0 x4 interface using the NVMe protocol. The controller and NAND are both from Western Digital.

Fits ultra-thin laptops and small-form-factor PCs

This 42 mm long drive suits devices that only accept the 2242 size, such as slim ultrabooks, embedded boards and compact desktops. Builders whose motherboards require the longer 2280 form factor cannot use this module. Buyers needing more than 256 GB of capacity should look at larger drives.

PCIe 3.0 x4 interface with 2400 MB/s peak read

The single specification that decides compatibility is the PCIe 3.0 x4 electrical interface. The host must provide an M-key slot wired for PCIe 3.0 NVMe operation. Sequential reads reach up to 2400 MB/s while writes reach up to 900 MB/s, with endurance rated at 200 TBW.

Highlights

  • Compact 42 mm M.2 2242 form factor fits thin ultrabooks and small-form-factor PCs
  • PCIe 3.0 x4 NVMe interface delivers up to 2400 MBps sequential read for fast boot and app load
  • Up to 900 MBps sequential write accelerates file saves and content creation workflows
  • 170,000 random read IOPS and 120,000 random write IOPS keep multitasking responsive
  • 200 TBW endurance and 1.8 million hour MTBF provide long-term reliability for daily workloads

Specifications

Form FactorM.2 2242
Capacity256GB
InterfacePCI-Express 3.0 x4
ControllerWestern Digital
Max Sequential ReadUp to 2400 MBps
Max Sequential WriteUp to 900 MBps
4KB Random ReadUp to 170,000 IOPS
4KB Random WriteUp to 120,000 IOPS
Terabytes Written (TBW)200TB
MTBF1,800,000 hours
HeatSinkwithout HeatSink

Questions about this item

Will this drive fit in a laptop that only has an M.2 2242 slot?

Yes, the drive is 42 mm long and uses the M.2 2242 form factor, so it fits slots that accept 2242 modules.

Does the 256 GB capacity provide enough endurance for daily office work and light creative tasks?

The drive is rated for 200 TBW, which covers typical office workloads and moderate content creation for several years.

What sequential read and write speeds can I expect from the PCIe 3.0 x4 interface?

Up to 2400 MBps read and 900 MBps write, with 170000 IOPS random read and 120000 IOPS random write.

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