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Small black rectangular circuit board M.2 2230 SSD

SanDisk

SanDisk WDBDNH0020BBK-WRSN 2TB M.2 2230 internal SSD

SKU CH-V0NT-H9X23 MPN WDBDNH0020BBK-WRSN

A 2TB M.2 2230 NVMe drive with sequential reads up to 5150 MBps and 1200 TBW endurance for handheld gaming devices

  • Total capacity2 TB
  • Sequential read speedUp to 5,150 MB/s
  • Sequential write speedUp to 4,850 MB/s
  • Interface typePCIe® Gen 4.0
  • Form factorM.2 2230
  • Intended useConsumer

Capacity 2TB

  • 2TB capacity stores more games and large files
  • M.2 2230 form factor fits handhelds and compact laptops
  • Sequential read up to 5150 MBps speeds game installs and level loads
  • 1200 TBW endurance rating supports heavy write workloads
  • 75 million hours MTTF indicates long-term reliability

2TB M.2 2230 NVMe SSD

The SanDisk SN770M delivers 2TB of PCIe Gen 4.0 storage in the compact M.2 2230 form factor. It uses 3D NAND TLC flash and a DRAM-less design with HMB caching. Sequential speeds reach 5150 MBps read and 4850 MBps write. It targets handheld gaming devices and compatible laptops.

Upgrade from factory fitted drives

Replacing a smaller original drive adds space for larger game libraries and faster level loads. The 1200TBW endurance rating supports heavy write workloads over the drive's lifespan. A move to this capacity makes sense when the existing SSD limits the number of installed titles.

2TB capacity headroom

The 2TB volume comfortably holds dozens of modern games and media files. Random performance of 650000 read IOPS and 800000 write IOPS keeps responsiveness high during gameplay. Thermal limits sit at 85°C, so sustained heavy transfers in thin chassis may throttle.

How it compares

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

Price $294.99
Pricier than about 68% of the 1,994 comparable items (median $180.49).
Total capacity 2 TB
Higher than about 70% of the 1,368 comparable items (median 1 TB).
Sequential read speed Up to 5,150 MB/s
Higher than about 71% of the 1,180 comparable items (median 2,400 MB/s).
Price per TB $147.50 per TB
Cheaper than about 59% of the 1,362 comparable items (median $165.50 per TB).

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Specifications

Product
Brand nameWestern Digital
Product lineSN770M
Model nameWDBDNH0020BBK-WRSN
Total capacity2 TB
Intended useConsumer
Performance
Sequential read speedUp to 5,150 MB/s
Sequential write speedUp to 4,850 MB/s
Random read (4K)Up to 650,000 IOPS
Random write (4K)Up to 800,000 IOPS
Storage
NAND flash type3D NAND TLC
Cache memoryNo DRAM (HMB)
Write endurance1200 TB
Connectivity
Connection protocolNVMe
Ports & slots
Interface typePCIe® Gen 4.0
Size & build
Form factorM.2 2230
Overall height2.38 mm
Overall width22 ± 0.15 mm
Product depth30 ± 0.15 mm
Product weight2.8g ± 0.5g
Shipping weight0.05 kg
Package size127 × 102 × 23 mm
Environment & compliance
Operating temperature range0 °C to 85 °C
Storage temperature range-40 °C to 85 °C
More details
Mean time to failure1.75 Million Hours

Other versions of this model

1 more in the same range

Questions about this item

Will the M.2 2230 form factor and 2.38 mm height fit my Steam Deck slot?

Yes, the drive is built to the M.2 2230 standard measuring 22 mm wide by 30 mm long with a 2.38 mm profile, matching the slot used in Steam Deck and many Surface laptops.

What is the correct way to seat the PCIe Gen 4.0 NVMe drive and the screw size people often lose?

Insert the drive at an angle until the gold edge contacts are fully hidden, then press it flat and secure it with the single M2 × 3 mm standoff screw supplied by the device manufacturer.

How much data can I write before the 3D NAND TLC cells reach their rated endurance?

The drive is rated for 1200 TBW, so you can write roughly 650 GB every day for the five-year warranty period before reaching that limit.

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