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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

  • Total capacity500 GB
  • Sequential read speedUp to 2,400 MB/s
  • Sequential write speedUp to 1,750 MB/s
  • Interface typePCI-Express 3.0 x4
  • Form factorM.2 2280
  • Product typeInternal Solid State Drive (SSD)

Capacity 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.

How it compares

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

Price $58.99
Cheaper than about 87% of the 1,994 comparable items (median $180.49).
Total capacity 500 GB
Lower than about 70% of the 1,368 comparable items (median 1 TB).
Sequential read speed Up to 2,400 MB/s
Typical for this category: the median of 1,180 items is 2,400 MB/s.
Price per TB $117.98 per TB
Cheaper than about 75% of the 1,362 comparable items (median $165.50 per TB).

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Specifications

Product
Brand nameWestern Digital
Product lineBlue SN550 NVMe
Model nameWDS500G2B0C
Total capacity500 GB
Product typeInternal Solid State Drive (SSD)
Intended useConsumer
Performance
Sequential read speedUp to 2,400 MB/s
Sequential write speedUp to 1,750 MB/s
Random read (4K)Up to 300,000 IOPS
Random write (4K)Up to 240,000 IOPS
Storage
NAND flash type3D NAND
Write endurance300 TB
Ports & slots
Interface typePCI-Express 3.0 x4
Power
Idle power drawPS3 (Low Power): 30 mW
PS4 (Sleep): 5 mW
Active power draw3.5 W
Size & build
Form factorM.2 2280
Overall height2.38 mm
Overall width22 mm
Product depth80 mm
Product weight6.5g
Shipping weight0.04 kg
Package size127 × 102 × 3 mm
Environment & compliance
Operating temperature range0 °C to 70 °C
Storage temperature range-55 °C to 85 °C
Max shock tolerance1,500G @ 0.5 ms half sine
Vibration toleranceOperating: 5 gRMS, 10-2000 Hz, 3 axes
Non-operating: 4.9 gRMS, 7-800 Hz, 3 axes
More details
Mean time to failure1.7M hours

Other versions of this model

2 more in the same range

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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