WD Blue SN5000 2TB NVMe SSD: features, specs and who it suits

The WD Blue SN5000 is an internal NVMe solid state drive from Western Digital. This 2TB model (WDS200T4B0E) uses the PCIe Gen 4 interface in the M.2 2280 format, and Western Digital lists speeds up to 5,150 MB/s. It is aimed at creators and professionals who want fast storage inside a desktop or laptop. Here is what the specs mean.

PCIe Gen 4 and NVMe

NVMe is the protocol that lets an SSD talk directly to the processor over PCI Express lanes, rather than through the older SATA interface. PCIe Gen 4 doubles the per-lane bandwidth of Gen 3, which is how drives reach several thousand megabytes per second. A SATA SSD typically tops out around 550 MB/s, so an NVMe drive can be many times faster in sequential transfers. A Gen 4 drive also works in a Gen 3 slot, though at lower speeds.

What "up to 5,150 MB/s" means

The 2TB model is listed at up to 5,150 MB/s. The listing's headline figure of 5,500 MB/s applies to the 4TB model, so the capacity matters. Such figures are peak sequential read speeds under favourable conditions. Everyday tasks like starting an application depend more on responsiveness than on peak numbers.

nCache 4.0

Western Digital's nCache 4.0 is its caching technology. Drives of this type typically use part of the flash as a fast buffer to speed up writes, then move the data to its final location. Western Digital says it helps with multitasking and workflow responsiveness.

Capacity and endurance

The SN5000 range goes up to 4TB. Endurance is expressed in terabytes written (TBW), the amount of data the drive is rated to take over its life. Western Digital lists up to 1,200 TBW for the 4TB model, and the 2TB version has a lower figure, so check the datasheet for its exact figure. For most users, even a lower TBW is far more than they will write.

Included migration software

Western Digital offers a free download of Acronis True Image for Western Digital, a tool for copying your existing drive's contents to the new one. It can save a clean reinstall when you are replacing a boot drive.

Form factor

M.2 2280 means a stick 22 mm wide and 80 mm long. It plugs straight into an M.2 slot on the motherboard or laptop, with no cables. The listing gives no dimensions or weight.

Who it suits

It suits desktop builders, laptop upgraders and creators who work with large files, such as video, photos or project libraries, and want fast local storage. If your device has only a SATA slot, this drive won't work.

What to check before you buy

• Slot type: confirm your device has an M.2 slot that supports NVMe and 2280 length.
• Generation: check whether your slot is PCIe Gen 4 to get the full speed.
• Heat: some boards and laptops need a heatsink; check the manual.
• Compatibility: consoles and some laptops have specific requirements.
• Backup: copy important data across before swapping drives.

The short version

• 2TB internal NVMe SSD, model WDS200T4B0E, in M.2 2280 format.
• PCIe Gen 4 with speeds up to 5,150 MB/s as listed.
• Western Digital nCache 4.0 and free Acronis True Image for migration.
• SN5000 range reaches 4TB, rated up to 1,200 TBW for that size.
• Needs an M.2 NVMe slot; not for SATA-only machines.

Bloiq is reader-supported. Some links may earn us a commission; it never affects what we write. How we make money.