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Green single-sided M.2 2280 NVMe SSD with black controller and gold edge connector

Western Digital

Western Digital WD Blue SN550 WDS500G2B0C 500GB NVMe internal SSD

SKU CH-GCPW-TZ3B6 MPN WDS500G2B0C

A 500 GB M.2 2280 NVMe SSD delivering up to 2400 MB/s sequential read, 1750 MB/s write, 300000 IOPS random read and 300 TBW endurance

  • Device TypeInternal Solid State Drive (SSD)
  • Used ForConsumer
  • Form FactorM.2 2280
  • Capacity500GB
  • Memory Components3D NAND
  • InterfacePCI-Express 3.0 x4

Options 500GB

  • Fast boot and load times with sequential reads up to 2400 MB/s
  • Responsive multitasking from random reads up to 300000 IOPS
  • Fits compact builds using single-sided M.2 2280 form factor
  • Low idle draw of 30 mW extends laptop battery life
  • Long-term endurance rated at 300 TBW and 1.7M hours MTTF

Blue SN550 NVMe 500GB for consumers

The WD Blue SN550 is a consumer-grade internal SSD built on Western Digital 3D NAND. It uses the M.2 2280 form factor and connects through a PCI-Express 3.0 x4 interface. This drive targets everyday PC builds that need faster storage than SATA can provide.

Sustained workload behaviour

Sequential reads reach 2400 MBps and sequential writes reach 1750 MBps, while 4KB random reads hit 300000 IOPS and random writes 240000 IOPS. Active power draw stays at 3.5W and idle power drops to 30 mW, so the controller maintains throughput without heavy thermal throttling during long transfers.

Deciding specification

The drive is rated for 300TB written and 1.7M hours MTTF across an operating range of 0 to 70°C. If your workload stays within that endurance budget the SN550 will remain reliable for the life of the system.

Highlights

  • Fast boot and load times with sequential reads up to 2400 MB/s
  • Responsive multitasking from random reads up to 300000 IOPS
  • Fits compact builds using single-sided M.2 2280 form factor
  • Low idle draw of 30 mW extends laptop battery life
  • Long-term endurance rated at 300 TBW and 1.7M hours MTTF

Specifications

BrandWestern Digital
SeriesBlue SN550 NVMe
ModelWDS500G2B0C
Device TypeInternal Solid State Drive (SSD)
Used ForConsumer
Form FactorM.2 2280
Capacity500GB
Memory Components3D NAND
InterfacePCI-Express 3.0 x4
Max Sequential ReadUp to 2400 MBps
Max Sequential WriteUp to 1750 MBps
4KB Random ReadUp to 300,000 IOPS
4KB Random WriteUp to 240,000 IOPS
Terabytes Written (TBW)300TB
MTTF1.7M hours
FeaturesThe right storage for your next PC
NVMe goes mainstream with a powerful, cost-effective storage solution that adds to the reliability of an SSD.
Boost your performance
Get breakneck sequential read speeds up to 2,400 MB/s to improve your productivity no matter what you're doing or creating.
Think small
Build powerful small-form factor PCs with a slim single-sided M.2 2280 PCIe Gen3 x4 NVMe SSD.
Do more with less
Scalable NVMe hardware, accelerated architecture for high performance and low power draw.
Do more, faster
Western Digital-designed controller and firmware paired with our lat
Power Consumption (Idle)PS3 (Low Power): 30 mW
PS4 (Sleep): 5 mW
Power Consumption (Active)3.5W
Operating Temperature0°C ~ +70°C
Storage Temperature-55°C ~ +85°C
Max Shock Resistance1,500G @ 0.5 ms half sine
Max Vibration ResistanceOperating: 5 gRMS, 10-2000 Hz, 3 axes
Non-operating: 4.9 gRMS, 7-800 Hz, 3 axes
Height2.38mm
Width22.00mm
Depth80.00mm
Weight6.50g
Shipping weight0.04 kg
Package size127 × 102 × 3 mm

Other versions of this model

2 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

How hot does the WD Blue SN550 WDS500G2B0C get under sustained load?

The drive is rated for an operating temperature range of 0°C to 70°C and draws 3.5W active power, so typical case airflow keeps it well within limits during all-day use.

What motherboard slot is required for the M.2 2280 PCIe 3.0 x4 interface on this SSD?

You need an M.2 key-M slot wired for PCIe 3.0 x4; the drive is single-sided 2280 and will not fit SATA-only or key-B sockets.

Will the PCIe 3.0 x4 NVMe interface on this 500GB drive work with an older PCIe 2.0 M.2 slot?

Yes, the drive is backward compatible and will operate at PCIe 2.0 x4 speeds, though sequential reads will be limited to roughly half the 2400 MBps rating.

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