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Small green circuit board with black chips and gold edge connector, M.2 2280 form factor

Western Digital

Western Digital PC SN730 NVMe M.2 2280 256GB internal SSD SDBPNTY-256G

SKU CH-R1VP-ZQ72B MPN SDBPNTY-256G

A 256GB M.2 2280 NVMe drive using 3D NAND and PCIe Gen3 x4, reaching 3150 MB/s read and 2100 MB/s write with 200 TBW endurance

  • Total capacity256 GB
  • Sequential read speedUp to 3,150 MB/s
  • Sequential write speedUp to 2,100 MB/s
  • Interface typePCIe Gen3 x4 NVMe v1.3
  • Form factorM.2 2280
  • Product typeInternal Solid State Drive (SSD)
  • Fast boot and load times from sequential reads up to 3150 MB/s
  • Smooth multitasking with random read performance up to 270000 IOPS
  • Reliable long-term storage backed by 1.75M hours MTTF
  • Low power draw extends laptop battery life at 30 mW idle
  • Compact M.2 2280 form factor fits thin ultrabooks and desktops

Western Digital PC SN730 NVMe 256GB M.2 2280

This internal solid-state drive uses the M.2 2280 form factor and a PCIe Gen3 x4 interface. It provides 256GB of storage built with 3D NAND for consumer desktops and laptops. Sequential reads reach up to 3150 MBps and writes up to 2100 MBps.

PCIe Gen3 x4 NVMe v1.3 practical limits

The drive connects through a PCIe Gen3 x4 link using the NVMe v1.3 protocol. Peak throughput is bounded by the Gen3 lane rate, so sequential speeds top out at the rated 3150 MBps read and 2100 MBps write. Random performance scales to 270,000 read IOPS and 280,000 write IOPS. Endurance is rated up to 200 TBW with an MTTF of 1.75M hours.

Check your system before ordering

Verify the motherboard or laptop has an M.2 2280 slot wired for PCIe Gen3 x4 NVMe operation. The drive draws 30 mW idle and 100 mW active within a 0°C to 70°C operating range. Physical dimensions are 80.00mm long, 22.00mm wide and 2.38mm high.

How it compares

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

Price $71.99
Cheaper than about 82% 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).
Sequential read speed Up to 3,150 MB/s
Higher than about 57% of the 1,180 comparable items (median 2,400 MB/s).
Price per TB $281.21 per TB
Pricier than about 74% 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
Product linePC SN730 NVMe
Model nameSDBPNTY-256G
Total capacity256 GB
Product typeInternal Solid State Drive (SSD)
Intended useConsumer
Performance
Sequential read speedUp to 3,150 MB/s
Sequential write speedUp to 2,100 MB/s
Random read (4K)Up to 270,000 IOPS
Random write (4K)Up to 280,000 IOPS
Storage
NAND flash type3D NAND
Ports & slots
Interface typePCIe Gen3 x4 NVMe v1.3
Power
Idle power draw30 mW
Active power draw100 mW
Size & build
Form factorM.2 2280
Overall height2.38 mm
Overall width22 mm
Product depth80 mm
Product weight7.3g
Shipping weight0.09 kg
Package size152 × 102 × 5 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, 3 pulses per face
Vibration toleranceOperating: 5 gRMS, 10-2000 Hz, 3 axes
Non-Operating: 4.9 gRMS, 7-800 Hz, 3 axes
More details
Mean time to failureUp to 1.75M hours

Questions about this item

Should I choose the 256GB model or a larger capacity from the 256GB-1TB range?

The 256GB model suits light workloads and single-drive laptops; larger capacities up to 1TB provide more space and higher endurance for heavier write tasks.

What does the 3150 MBps sequential read figure mean once the drive is installed in my laptop?

It represents the peak throughput the controller can sustain over PCIe Gen3 x4; real-world speeds depend on the host controller, thermal limits and file sizes.

How does the PCIe Gen3 x4 NVMe v1.3 interface cap performance in practice?

The four-lane Gen3 link limits maximum theoretical bandwidth to roughly 4 GBps, so the drive's 3150 MBps read and 2100 MBps write sit within that ceiling.

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