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Small black circuit board, 22 by 30 millimetres, gold edge connector, chips on one side

SanDisk

SanDisk SN770M 2TB M.2 2230 NVMe internal SSD

SKU CH-VF85-V8KD9

M.2 2230 NVMe SSD with 2TB capacity and PCIe 4.0 speeds up to 5150 MB/s read for handheld gaming devices

  • Used ForConsumer
  • Form FactorM.2 2230
  • Capacity2TB
  • Memory Components3D NAND TLC
  • InterfacePCIe® Gen 4.0
  • ProtocolNVMe
  • Sequential reads up to 5150 MBps accelerate game loading
  • Sequential writes up to 4850 MBps speed up large file transfers
  • Random read 650000 IOPS and random write 800000 IOPS boost multitasking responsiveness
  • 1200TB endurance rating supports heavy daily write workloads
  • M.2 2230 form factor fits Steam Deck, ROG Ally and compatible laptops

Compact storage for handhelds

The SN770M is a 2TB M.2 2230 NVMe SSD designed for devices that only accept the shorter 2230 form factor. It fits Steam Deck, ROG Ally and many Surface or Dell laptops without adapters or modifications.

Thermals and power in use

Operating temperature spans 0°C to 85°C with a 2.38mm single-sided profile that leaves room for thin thermal pads. The PCIe 4.0 controller and TLC 3D NAND keep sustained write power modest, so handheld batteries are not drained aggressively during large installs.

Build and daily implications

The drive weighs 2.8g and measures 22mm by 30mm, matching the exact slot dimensions of supported machines. Western Digital Dashboard software on Windows lets owners monitor the 1200TBW endurance rating and apply firmware updates without opening the chassis.

Points forts

  • Sequential reads up to 5150 MBps accelerate game loading
  • Sequential writes up to 4850 MBps speed up large file transfers
  • Random read 650000 IOPS and random write 800000 IOPS boost multitasking responsiveness
  • 1200TB endurance rating supports heavy daily write workloads
  • M.2 2230 form factor fits Steam Deck, ROG Ally and compatible laptops

Caractéristiques

BrandWestern Digital
SeriesSN770M
ModelWDBDNH0020BBK-WRSN
Used ForConsumer
Form FactorM.2 2230
Capacity2TB
Memory Components3D NAND TLC
InterfacePCIe® Gen 4.0
ProtocolNVMe
Max Sequential ReadUp to 5150 MBps
Max Sequential WriteUp to 4850 MBps
4KB Random ReadUp to 650,000 IOPS
4KB Random WriteUp to 800,000 IOPS
Terabytes Written (TBW)1200TB
MTTF1.75 Million Hours
Operating Temperature0°C ~ +85°C
Storage Temperature-40°C ~ +85°C
Height2.38mm
Width22 ± 0.15mm
Depth30 ± 0.15mm
Weight2.8g ± 0.5g

Questions sur cet article

How do I install the M.2 2230 NVMe drive in a Steam Deck, and what step do people often miss?

Remove the back cover, disconnect the battery, insert the drive at a 30-degree angle into the M.2 2230 slot, secure it with the single screw, reconnect the battery, then reattach the cover; the step most people miss is disconnecting the battery before starting.

What maintenance will the 2TB 3D NAND TLC drive need over its 1200TB TBW life?

No hardware maintenance is required; keep firmware current via the Western Digital Dashboard on Windows and monitor SMART health attributes to track wear against the 1200TB TBW rating.

At what temperature does the PCIe Gen 4.0 NVMe SSD throttle during sustained heavy workloads?

The controller begins thermal throttling when the drive reaches its maximum operating temperature of 85°C to protect the 3D NAND TLC components.

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