SanDisk WDS400T1X0M-00CMT0 4TB internal SSD

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.