Western Digital WDS100T4B0E 1TB WD Blue SN5000 NVMe SSD

Name: Western Digital WDS100T4B0E 1TB WD Blue SN5000 NVMe SSD
Brand: Western Digital
SKU: WDS100T4B0E

Overview

The WD Blue SN5000 1TB operates on PCIe Gen 4 x4 — a 64 Gbps bus that enables its rated 5,150 MB/s sequential read speed. To frame what that means: a 50GB project file that takes 14 seconds to read from a SATA SSD reads in under 10 seconds from this drive, and the gap widens with larger files. The M.2 2280 form factor plugs into the same physical slot as any M.2 NVMe drive, and the drive negotiates down to PCIe Gen 3 on older systems, maintaining backward compatibility at proportionally reduced speeds. Western Digital's nCache 4.0 technology adds an SLC write buffer layer that absorbs burst writes at maximum speed before committing to the underlying TLC NAND — relevant for workloads that write large batches of files quickly, like RAW photo imports or project saves.

The SN5000 is positioned as a mainstream performance upgrade for content creators, prosumers, and system builders who want Gen 4 speed without paying for enterprise or enthusiast-tier NVMe pricing. It fits as a primary OS and application drive in a creative workstation, as a scratch disk for video editing, or as a game library drive in a PCIe Gen 4 gaming rig. The bundled Acronis True Image migration software is a practical addition that removes the reinstall penalty from upgrading, making this a genuine drop-in upgrade rather than a new build component. At 1TB, it's the entry point into the SN5000 family — users with larger project libraries or heavier write workloads should evaluate the 2TB or 4TB variants for both capacity and the improved endurance ratings at higher capacities.

Key Features

EXPANDED STORAGE. Hold more masterpieces and enjoy endless inspiration with up to 4TB(1) capacity.

BOOST YOUR FLOW. Harness AI and streamline your workflow with the combined power of PCIe Gen 4, up to 5,500MB/s(2) read speeds (4TB(1) model), and Western Digital nCache 4.0 Technology.

PRO MULTITASKING. Switch smoothly between applications and projects with high-end NVMe storage technology.

DEPENDABLE ENDURANCE. Create confidently with up to 1,200TBW(3) (4TB(1) model) endurance for ideating, drafting, and finalizing your creative work.

FREE Acronis True Image. Download Acronis True Image for Western Digita data migration software to transfer your files(5).

Specifications

Model

WDS100T4B0E

Brand

Western Digital

Capacity

1TB

Form Factor

M.2 2280

Interface

PCIe Gen 4.0 NVMe

Sequential Read Speed

Up to 5,150 MB/s

Cache Technology

Western Digital nCache 4.0

Connectivity

PCIe (backward compatible with Gen 3)

Bundled Software

Acronis True Image for Western Digital (data migration)

Warranty

5-year limited

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Pros & Cons

👍 Pros

PCIe Gen 4 interface delivers up to 5,150 MB/s sequential reads on the 1TB model — roughly 1.5× faster than Gen 3 NVMe drives and over 10× faster than SATA SSDs for large sequential transfers.
M.2 2280 form factor is the universal standard, compatible with virtually every desktop and laptop M.2 slot released since 2016.
nCache 4.0 multi-tier caching sustains write performance longer under heavy burst workloads compared to drives relying solely on raw TLC NAND write speeds.
Bundled Acronis True Image eliminates the need for a separate cloning utility, reducing the full cost and friction of migrating from an existing drive.
Western Digital's 5-year limited warranty provides long-term coverage appropriate for a primary system drive.

👎 Cons

The 1TB model's read speed (up to 5,150 MB/s) is lower than the top-spec 4TB model (up to 5,500 MB/s) — the larger flash array's parallelism benefits peak sequential throughput.
nCache 4.0's SLC write buffer is finite; sustained writes exceeding the cache size — such as large video file ingest directly to the drive — will drop to native TLC write speeds, which are significantly lower than the headline figures.
No included heatsink — in thermally constrained M.2 slots (some laptops, mini-ITX builds), the drive may throttle under sustained workloads without aftermarket thermal management.
PCIe Gen 4 requires a compatible platform; builders on older Intel or AMD systems (pre-2020) are limited to Gen 3 bandwidth and will not achieve the rated performance.

Frequently Asked Questions

Does my motherboard need PCIe Gen 4 to use this drive, or will it work in a Gen 3 slot?

The SN5000 is backward compatible with PCIe Gen 3 M.2 slots. In a Gen 3 slot, sequential read speeds will cap around 3,500 MB/s due to the halved bandwidth ceiling — still faster than any SATA SSD, but below the drive's rated 5,150 MB/s. If your platform supports Gen 4 (Intel 12th Gen+, AMD Ryzen 5000+), you'll realize the full spec.

What is Western Digital nCache 4.0 and what bottleneck does it address?

nCache 4.0 is WD's multi-tier caching architecture that uses a portion of the NAND as a fast SLC write buffer, then stages data to the denser storage blocks in the background. It addresses the write speed cliff that affects TLC NAND drives under sustained writes — workloads like large file transfers or game installs stay fast longer before hitting the raw TLC write ceiling.

How does the 1TB model's endurance compare to higher-capacity variants?

WD rates the SN5000 endurance by capacity — the 4TB model reaches 1,200TBW, while the 1TB sits at a proportionally lower rating (WD lists this per SKU in their product documentation). For typical desktop and creative workloads, the 1TB endurance rating comfortably exceeds the useful life of the drive before capacity or performance obsolescence.

Is the SN5000 compatible with PS5 or other consoles requiring PCIe Gen 4 NVMe?

The M.2 2280 form factor and PCIe Gen 4 NVMe interface are technically compatible with PS5 expansion slot requirements. Confirm Sony's current approved drive list and whether a heatsink is required, as console compatibility can have specific thermal and firmware constraints beyond the electrical interface.

What does the free Acronis True Image software do?

Acronis True Image for Western Digital handles cloning your existing drive to the SN5000 — it copies your OS, applications, and data to the new drive so you can swap without a clean Windows reinstall. It's a one-time migration tool bundled specifically to reduce the friction of upgrading from an existing drive.