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Green rectangular M.2 2280 circuit board with black controller and NAND chips, no heatsink visible

SanDisk

SanDisk WDS400T1X0M-00CMT0 4TB internal SSD

SKU CH-GE8T-NKJC3 MPN WDS400T1X0M-00CMT0

A 4 TB PCIe 5.0 x4 NVMe M.2 2280 SSD delivering up to 14 900 MB/s read and 14 000 MB/s write with 2 400 TBW endurance

  • Device TypeInternal Solid State Drive (SSD)
  • Used ForConsumer
  • Form FactorM.2 2280
  • Capacity4TB
  • InterfacePCI-Express 5.0 x4
  • ProtocolNVMe

Options 4TB

  • PCIe 5.0 x4 interface accelerates large-file transfers
  • 2,300,000 random read IOPS and 2,400,000 random write IOPS for responsive multitasking
  • 2,400 TBW endurance rating supports heavy write workloads
  • 1,750,000-hour MTTF indicates long-term drive reliability
  • 4 GB DRAM cache sustains consistent performance under load

Capacity and audience

This WD_BLACK SN8100 drive provides 4TB of NVMe storage over a PCIe 5.0 x4 interface, aimed at gamers and creators who need fast access to large libraries and AI model files. The M.2 2280 form factor fits standard desktop and laptop slots without a pre-attached heatsink. Sequential reads reach 14900 MBps and writes 14000 MBps, while random performance hits 2300000 read IOPS and 2400000 write IOPS.

Compatibility checks

Confirm your motherboard or laptop has an M.2 2280 slot wired for PCIe 5.0 x4; the drive will fall back to Gen 4 or Gen 3 speeds on older platforms. A 4GB DRAM cache is onboard, so no host memory buffer reliance is required. The operating range spans 0°C to 85°C, and idle power drops to 5 mW in sleep state, so verify your system cooling can handle 6.5 W read or 7.0 W write loads.

Build and daily implications

TLC 3D CBA NAND underpins an endurance rating of 2400 TBW and an MTTF of 1750000 hours, indicating durability for heavy write workloads. Without a bundled heatsink, you may add a motherboard shield or third-party cooler if sustained throughput pushes temperatures toward the 85°C limit. The 5.0 interface and sub-7 W average power draw deliver over 100% better efficiency than Gen 4 equivalents.

Highlights

  • PCIe 5.0 x4 interface accelerates large-file transfers
  • 2,300,000 random read IOPS and 2,400,000 random write IOPS for responsive multitasking
  • 2,400 TBW endurance rating supports heavy write workloads
  • 1,750,000-hour MTTF indicates long-term drive reliability
  • 4 GB DRAM cache sustains consistent performance under load

Specifications

BrandWestern Digital
ModelWDS400T1X0M-00CMT0
Device TypeInternal Solid State Drive (SSD)
Used ForConsumer
Form FactorM.2 2280
Capacity4TB
InterfacePCI-Express 5.0 x4
ProtocolNVMe
Cache4GB DRAM
Max Sequential ReadUp to 14900 MBps
Max Sequential WriteUp to 14000 MBps
4KB Random ReadUp to 2,300,000 IOPS
4KB Random WriteUp to 2,400,000 IOPS
Terabytes Written (TBW)2400TB
MTTF1,750,000 Hours
HeatSinkwithout HeatSink
FeaturesExperience the breakneck speed of PCIe Gen 5
Drastically enhance your gaming and content creation experience with the speed of PCIe Gen 5.0x4 NVMe M.2 SSD technology - perfect for gaming, content creation, and loading models for AI-powered applications.
Blistering speeds for intense tasks
With the help of our nCache 4.0 feature, the WD_BLACK SN8100 SSD reaches sequential read speeds up to an astonishing 14,900MB/s, sequential write speeds up to 14,000MB/s, and over 2,300,000 IOPS of random performance (2TB-4TB models).
Designed to perform
Our latest TLC 3D CBA NAND technology provide
Power Consumption (Idle)Sleep (PS4): 5 mW
Power Consumption (Active)6.5W Read / 7.0W Write
Operating Temperature32°F to 185°F (0°C to 85°C)
Storage Temperature-40°F to 185°F (-40°C to 85°C)
Max Shock Resistance1,500G @0.5 ms half sine
Max Vibration ResistanceOperating Vibration: 5 gRMS, 10-2000 Hz, 3 axes
Non-operating Vibration: 4.9 gRMS, 7-800 Hz, 3 axes
Height2.38mm
Width80mm
Depth22mm
Weight7.5g
Shipping weight0.05 kg
Package size127 × 102 × 19 mm

Other versions of this model

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Questions about this item

Does the WDS400T1X0M-00CMT0 come with a heatsink or mounting screw?

The drive is supplied without a heatsink. A compatible M.2 screw is normally provided by the motherboard or laptop manufacturer.

Should I choose the 4 TB version or a smaller capacity for heavy video editing?

The 4 TB model delivers 2,400 TBW endurance and the full 14,900 MB/s read speed, giving maximum workspace and write longevity for large project files.

Will the 14,900 MB/s sequential read actually appear in my gaming rig?

A PCIe 5.0 x4 motherboard slot and adequate cooling are required; on a PCIe 4.0 slot the drive will run at that generation's lower speed ceiling.

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