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Green rectangular circuit board with gold edge connector and black chips, no heatsink

SanDisk

SanDisk SN7100 WDS400T4X0E-00CJA0 4TB M.2 2280 PCIe 4.0 x4 internal SSD

SKU CH-F836-H7DSN MPN WDS400T4X0E-00CJA0

A 4 TB M.2 2280 NVMe SSD with PCIe 4.0 x4 interface delivering up to 7000 MB/s reads and 6700 MB/s writes

  • Device TypeInternal Solid State Drive (SSD)
  • Used ForConsumer
  • Form FactorM.2 2280
  • Capacity4TB
  • Memory ComponentsTLC 3D NAND
  • InterfacePCI-Express 4.0 x4

Style Faster

Options 4TB

  • Sequential reads up to 7000 MB/s accelerate game loading
  • Sequential writes up to 6700 MB/s speed up large file saves
  • Random reads up to 900,000 IOPS deliver snappy system responsiveness
  • 2400 TBW endurance supports heavy streaming and content creation
  • 1,750,000 hour MTBF indicates long-term drive reliability

Four-terabyte PCIe 4.0 NVMe drive

The SanDisk SN7100 WDS400T4X0E-00CJA0 is a consumer-grade internal SSD built on the M.2 2280 form factor. It uses TLC 3D NAND and a DRAM-less design with host memory buffer support. The drive targets gamers and creators who need large capacity in laptops or handheld devices. Sequential reads reach up to 7000 MBps and writes up to 6700 MBps.

PCIe 4.0 x4 interface limits

The PCI-Express 4.0 x4 link caps theoretical throughput at roughly 8 GBps, so real-world peaks sit near the quoted 7000 MBps read and 6700 MBps write. Random performance reaches 900,000 IOPS read and 1,350,000 IOPS write within that bandwidth envelope. Systems limited to PCIe 3.0 will halve the available ceiling. The drive operates without a heatsink, relying on the host thermal solution.

2400 TBW endurance rating

The 4TB model carries a 2400 terabytes written rating backed by a 1,750,000-hour MTBF figure. That endurance level suits heavy write workloads such as gameplay streaming, capture and content creation. Buyers should match the TBW expectation to their projected daily write volume to confirm suitability.

Privalumai

  • Sequential reads up to 7000 MB/s accelerate game loading
  • Sequential writes up to 6700 MB/s speed up large file saves
  • Random reads up to 900,000 IOPS deliver snappy system responsiveness
  • 2400 TBW endurance supports heavy streaming and content creation
  • 1,750,000 hour MTBF indicates long-term drive reliability

Specifikacijos

BrandSanDisk
SeriesSN7100
ModelWDS400T4X0E-00CJA0
Part NumberWDS400T4X0E
Device TypeInternal Solid State Drive (SSD)
Used ForConsumer
Form FactorM.2 2280
Capacity4TB
Memory ComponentsTLC 3D NAND
InterfacePCI-Express 4.0 x4
ProtocolNVMe
CacheNo DRAM (HMB)
Max Sequential ReadUp to 7000 MBps
Max Sequential WriteUp to 6700 MBps
4KB Random ReadUp to 900,000 IOPS
4KB Random WriteUp to 1,350,000 IOPS
Terabytes Written (TBW)2400TB
MTBF1,750,000 hours
HeatSinkwithout HeatSink
FeaturesHIGH-OCTANE GAMING. Experience speeds up to 7,250MB/s read** and 6,900MB/s write** (1-2TB* models), with up to 35% faster performance than previous generation.***
PURPOSE-BUILT. Designed for serious on-the-go gamers, with a PCIe Gen4 interface and Western Digital’s next generation TLC 3D NAND.
MORE SPACE FOR FAVORITES AND NEW TITLES. Available in multiple capacities up to 4TB*, upgrade to an SSD that gives you tons of storage.
MORE TIME TO CLEAR THAT CHECKPOINT. Built with laptops and handheld gaming devices in mind, with up to 100% more power efficiency over the previous generation.
Power Consumption (Idle)Sleep (PS4): 5mW
Power Consumption (Active)Average Active Power: 95mW
Maximum Operating Power: 4.5W
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 Resistance5 gRMS, 10-2000 Hz, 3 axes
Height1.14mm
Width22mm
Depth80mm
Weight5.8g
Siuntos svoris0.05 kg
Pakuotės dydis127 × 102 × 23 mm

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Should I pick the 4TB model over smaller capacities for my gaming laptop?

The 4TB version delivers up to 7000 MBps read and 6700 MBps write with 2400TB endurance, giving the highest capacity and sustained performance for large game libraries.

What does the 7000 MBps sequential read figure mean when the drive is installed in my system?

In a PCIe 4.0 x4 slot the drive can reach up to 7000 MBps read and 6700 MBps write; actual speeds depend on your motherboard, cooling and workload.

Does the PCIe 4.0 x4 NVMe interface limit performance on a PCIe 3.0 motherboard?

On a PCIe 3.0 x4 slot the drive will operate at Gen 3 speeds, capping sequential throughput below the rated 7000 MBps read and 6700 MBps write.

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