4TB WD Black SN8100 M.2 PCIe 5.0 NVMe SSD (14900MB/s R, 14000MB/s W)

4TB WD Black SN8100 M.2 PCIe 5.0 NVMe SSD

A 4TB PCIe 5.0 NVMe SSD with 14,900MB/s reads, 14,000MB/s writes and a 2400TBW endurance rating.

The WD_BLACK SN8100 4TB (model WDS400T1X0M-00CMT0) is the PCIe Gen 5.0 x4 flagship in the WD_BLACK range, built on TLC 3D CBA NAND with an onboard DRAM cache. The 4TB capacity gives room for a large games library, AI models and big creative projects on a single drive, and its low power draw means it runs cooler than many Gen 5 drives. Punch can fit it as the primary drive in a new PCIe 5.0 build under the motherboard’s M.2 heatsink.

Performance

The 4TB model is rated at up to 14,900MB/s sequential read and 14,000MB/s sequential write, with random performance of up to 2.3 million IOPS read and 2.4 million IOPS write. nCache 4.0 technology keeps large transfers fast and Microsoft DirectStorage support helps compatible games load textures with less CPU work. Average active power is quoted at 6.5W reading and 7.0W writing, which Sandisk states is over 100 per cent more efficient than its previous Gen4 drive.

Reliability and security

The drive is rated for 2400TB total bytes written with a five-year limited warranty, whichever comes first, and Sandisk quotes an MTTF of up to 1.75 million hours. TCG Opal 2.02 hardware encryption is supported. The SanDisk Dashboard for Windows monitors drive health, keeps firmware current and can enable Game Mode automatically, and Acronis True Image for SanDisk is included for cloning an existing drive.

Compatibility

A PCIe 5.0 x4 M.2 slot is needed for full speed; the drive is backward compatible with PCIe Gen4 and Gen3 slots at reduced speed. It uses the standard M.2 2280 form factor at 2.38mm thick and 7.5g, so it fits under motherboard heatsinks, and operates at drive-reported temperatures from 0 to 85 degrees C. Windows 10 or later is supported.

Ideal for

• High-end gaming PCs on PCIe 5.0 platforms with large libraries
• Video editing, 3D and AI workloads that read and write very large files
• Builders who want the fastest Gen 5 drive with modest heat output

Specifications

• Model number: WDS400T1X0M-00CMT0
• Capacity: 4TB
• Form factor: M.2 2280
• Interface: PCIe Gen 5 x4, NVMe 2.0
• NAND: TLC 3D CBA NAND
• DRAM cache: Yes
• Sequential read: up to 14,900MB/s
• Sequential write: up to 14,000MB/s
• Random read: up to 2.3 million IOPS
• Random write: up to 2.4 million IOPS
• Endurance: 2400TBW
• MTTF: up to 1.75 million hours
• Power: 6.5W average read, 7.0W average write, 5mW sleep
• Security: TCG Opal 2.02
• Operating temperature: 0 to 85 degrees C (drive reported)
• Dimensions: 80 x 22 x 2.38mm
• Weight: 7.5g
• Warranty: 5-year limited or maximum endurance