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Small green M.2 2242 circuit board with black controller and NAND chips

Western Digital

Western Digital PC SN520 SDAPMUW-256G 256GB M.2 2242 NVMe internal SSD

SKU CH-X29K-G9YCG MPN SDAPMUW-256G

A 256 GB M.2 2242 NVMe drive delivering up to 1700 MBps read and 1300 MBps write speeds for compact systems

  • Device TypeInternal Solid State Drive (SSD)
  • Used ForConsumer
  • Form FactorM.2 2242
  • Capacity256GB
  • Memory Components64-layer 3D NAND
  • InterfacePCIe Gen3 x2 NVMe 1.3
  • Compact M.2 2242 form factor fits space-constrained laptops and small desktops
  • Sequential reads up to 1700 MBps accelerate boot and app load times
  • Sequential writes up to 1300 MBps speed up file saves and content creation
  • Random read IOPS up to 220000 deliver snappy multitasking responsiveness
  • Low idle power of 25 mW extends battery life on mobile devices

256GB PCIe Gen3 x2 NVMe 1.3 SSD

The Western Digital PC SN520 SDAPMUW-256G is a 256GB internal solid-state drive built on 64-layer 3D NAND. It uses an M.2 2242 form factor and a PCIe Gen3 x2 interface with NVMe 1.3 protocol. Sequential speeds reach up to 1700 MBps read and 1300 MBps write.

Suits thin laptops and compact PCs with a 2242 slot

This drive fits systems that accept the shorter 2242 length. It is not compatible with bays that only support longer modules. Low idle power of 25 mW and sleep power of 2.5 mW help battery life in mobile devices.

PCIe Gen3 x2 lane configuration

The x2 link caps sequential throughput below what a four-lane drive can deliver. Check that your platform can boot from NVMe and that the M.2 key matches before purchasing.

Points forts

  • Compact M.2 2242 form factor fits space-constrained laptops and small desktops
  • Sequential reads up to 1700 MBps accelerate boot and app load times
  • Sequential writes up to 1300 MBps speed up file saves and content creation
  • Random read IOPS up to 220000 deliver snappy multitasking responsiveness
  • Low idle power of 25 mW extends battery life on mobile devices

Caractéristiques

BrandWestern Digital
SeriesPC SN520
ModelSDAPMUW-256G
Device TypeInternal Solid State Drive (SSD)
Used ForConsumer
Form FactorM.2 2242
Capacity256GB
Memory Components64-layer 3D NAND
InterfacePCIe Gen3 x2 NVMe 1.3
Max Sequential ReadUp to 1700 MBps
Max Sequential WriteUp to 1300 MBps
4KB Random ReadUp to 220,000 IOPS
4KB Random WriteUp to 175,000 IOPS
MTTFUp to 1.752M hours
FeaturesEndurance (TBW): 256
Flexible
Multiple form factors provide easy migration/qualification of platforms to NVMe architecture
High Endurance
Designed to improve performance and endurance, featuring nCache 3.0
Versatile
Various M.2 sizes and capacities to address varying OEM and systems builders' needs
Power Consumption (Idle)25 mW (Low Power)
2.5 mW (Sleep)
Power Consumption (Active)75 mW
Operating Temperature0°C ~ +70°C
Storage Temperature-55°C ~ +85°C
Max Shock Resistance1,500G @ 0.5 ms half sine
Max Vibration ResistanceOperating Vibration: 5 gRMS, 10-2000 Hz, 3 axes
Non-operating Vibration: 4.9 gRMS, 7-800 Hz, 3 axes
Height2.38mm
Width22.00mm
Depth42.00mm
Weight4.00g
Poids d’expédition0.09 kg
Dimensions du colis127 × 102 × 8 mm

Questions sur cet article

Will my motherboard need an M.2 2242 slot with PCIe Gen3 x2 NVMe 1.3 support for this drive to work?

Yes, the drive requires an M.2 2242 key-M slot that provides a PCIe Gen3 x2 NVMe 1.3 interface; without that exact slot the SSD cannot be installed or detected.

Can I keep my older PCIe Gen3 x4 NVMe drive installed alongside this PCIe Gen3 x2 model?

Yes, both drives use the same NVMe protocol on PCIe Gen3; the x2 drive simply negotiates two lanes while the x4 drive uses four, so they coexist without conflict on separate M.2 slots.

How can I confirm the 1700 MBps sequential read and 1300 MBps sequential write speeds after installation?

Run a standard NVMe benchmark tool such as CrystalDiskMark using a 1 GiB test file on an empty partition; the reported sequential read and write results should approach the stated up to 1700 MBps and up to 1300 MBps figures.

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