We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Small black M.2 2230 circuit board with gold edge connector and silver controller chip

SanDisk

SanDisk WDBDNH0010BBK-WRSN SN770M 1TB M.2 2230 NVMe internal SSD

SKU CH-MS0X-Z9HNQ MPN WDBDNH0010BBK-WRSN

A compact M.2 2230 NVMe SSD delivering up to 5150 MB/s read and 4900 MB/s write speeds for handheld gaming devices and compatible laptops

  • Total capacity1 TB
  • Sequential read speedUp to 5,150 MB/s
  • Sequential write speedUp to 4,900 MB/s
  • Interface typePCIe® Gen 4.0
  • Form factorM.2 2230
  • Intended useConsumer

Capacity 1TB

  • Fits Steam Deck and ROG Ally with M.2 2230 form factor
  • Sequential reads up to 5150 MBps for fast game loads
  • Sequential writes up to 4900 MBps speed up installs
  • 600TB endurance rating supports heavy gaming workloads
  • 75 million hours MTTF indicates long-term reliability

SN770M 1TB M.2 2230 NVMe SSD

The WD_BLACK SN770M is a 1TB M.2 2230 NVMe drive built for handheld gaming devices and compatible laptops. It uses PCIe Gen 4.0 and 3D NAND TLC to deliver sequential reads up to 5150 MBps and writes up to 4900 MBps. Random performance reaches 740000 read IOPS and 800000 write IOPS.

Installation fits M.2 2230 slots

The single-sided 2.38mm height matches the tight clearance inside devices such as the Steam Deck, ROG Ally and many Surface models. No heatsink is included, so thermal throttling can appear under sustained heavy writes in fanless chassis. Western Digital Dashboard on Windows helps monitor health and update firmware.

1TB capacity with 600TBW endurance

The 1TB model stores dozens of large titles and leaves headroom for OS updates and saves. Rated at 600TB written and 1.75 million hours MTTF, it handles typical gaming workloads for years. Workloads that exceed the TBW rating or sustained writes beyond the thermal limits of the host device will reduce lifespan.

How it compares

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

Price $204.99
Pricier than about 55% of the 1,994 comparable items (median $180.49).
Total capacity 1 TB
Typical for this category: the median of 1,368 items is 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 $204.99 per TB
Pricier than about 61% 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 lineSN770M
Model nameWDBDNH0010BBK-WRSN
Total capacity1 TB
Intended useConsumer
Performance
Sequential read speedUp to 5,150 MB/s
Sequential write speedUp to 4,900 MB/s
Random read (4K)Up to 740,000 IOPS
Random write (4K)Up to 800,000 IOPS
Storage
NAND flash type3D NAND TLC
Write endurance600 TB
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

How do I confirm the SN770M is hitting 5150 MBps read and 4900 MBps write after install?

Run CrystalDiskMark or a similar NVMe benchmark on Windows; sequential results should approach 5150 MBps read and 4900 MBps write on a PCIe 4.0 slot, while the Western Digital Dashboard reports drive health and firmware status.

What ships in the WDBDNH0010BBK-WRSN retail box and what must I source separately?

The box contains only the 1 TB M.2 2230 SSD; you must supply a compatible M.2 2230 slot, a motherboard standoff and screw, and a heatsink if your device requires one.

Which capacity of the SN770M M.2 2230 line should I pick for a Steam Deck upgrade?

The 1 TB model delivers 5150 MBps read, 4900 MBps write, 600 TBW and 1.75 million hours MTTF — choose 2 TB only if you need more space and your device accepts the same 2230 form factor.

More in Internal NVMe & SATA SSDs

Similar items