Western Digital

Western Digital 4TB SN850X M.2 2280 Gaming SSD Built-in NVMe PCIe Gen4x4 Read Up to 7300MB/s Write Up to 6600MB/s WDBB9G0040BNC [Parallel Import]

Name: Western Digital 4TB SN850X M.2 2280 Gaming SSD Built-in NVMe PCIe Gen4x4 Read Up to 7300MB/s Write Up to 6600MB/s WDBB9G0040BNC [Parallel Import]
Brand: Western Digital
SKU: B0C4HGMC36

Status: Western Digital 4TB SN850X M.2 2280 Gaming SSD… (4TB PCIe 4.0 NVMe SSD): Unavailable on Amazon as of 2026-10-21 04:30 UTC. Closest in-stock match (same 4TB PCIe 4.0 NVMe): INLAND 4TB Gaming NVMe SSD Internal Solid State…, $675.99 on Amazon as of 2026-10-21 10:15 UTC (price may vary). eBay sellers may still list this model new or used.

View Current Price — $675.99 🛒 Search eBay for this model

Bottom line: The Western Digital 4TB SN850X M.2 2280 Gaming SSD Built-in NVMe PCIe is a specs-and-price decision rather than a crowd-consensus one in the ssds & storage category. Check the specification table below against one or two close alternatives — on price and spec fit, not on star ratings.

Unavailable on Amazon as of 2026-10-21 04:30 UTC

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Currently unavailable on Amazon. Not the same product — 3 in-stock alternatives with matching specs:

Same 4TB PCIe 4.0 NVMe: INLAND 4TB Gaming NVMe SSD Internal Solid State… — $675.99 on Amazon as of 2026-10-21 10:15 UTC (price may vary).

View Current Price — $675.99

Same 4TB PCIe 4.0 NVMe: Fikwot FN955 4TB NVMe SSD M.2 2280 PCIe Gen4x4 — $549.99 on Amazon as of 2026-10-22 04:20 UTC (price may vary).

View Current Price — $549.99

Same 4TB PCIe 4.0 NVMe: Western Digital WDS400T2X0E-EC Western Digital… — $729.99 on Amazon as of 2026-10-22 04:20 UTC (price may vary).

View Current Price — $729.99

Original listing (currently unavailable) → Compare to similar ssds & storage

By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-21

Mike Perry — Hardware researcher since 2014. For SSDs and PC storage upgrades, synthesises manufacturer specs and independent reviews rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference. About the author →

Pros & Cons

Pros

✓ Compatible with PlayStation 5 (models with heatsink only)
✓ Backed by Western Digital's warranty and support channels

Cons

✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
✗ Price, stock, shipping and returns are set by the retailer and may have changed since this page was last updated

Manufacturer description

■Interface※1: PCIe Gen4 16GT/s Max 4 lanes ■External Dimensions (without heatsink) Length (Max): 80 ± 0.15m, Width (Max): 22 ± 0.15mm, Height (Max): 2.38mm, Weight (Max): 7.5g ± 1g ■External Dimensions (with heatsink) Length (max): 80 ± 0 0 0.23.20 ± ± 0.23.20 ± 0.0 0.8 inches (20 mm), Height (max): 8.80 ± 0.20 mm, Weight (max): 24 g ± 3 g; Durability (TBW) *2 4TB: 2400, 2TB: 1200, 1TB: 600 ■ Sequential Read *3 4TB: 7,300 MB/s, 1TB: 7 MB/s ,300MB/. Seconds

SpecPicks Verdict

SpecPicks scored Western Digital 4TB SN850X M.2 2280 Gaming SSD Built-in NVMe PCIe… using a rating × review-volume × price-fit model applied to published specs and reviews across the ssds & storage category. Western Digital's ssds & storage lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for ssds & storage of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

M.2 2280
PCIe Gen4 x 4 (backwards compatible with PCIe Gen3 x4, PCIe Gen3 x2, PCIe Gen3 x1, PCIe Gen2 x4, PCIe Gen2 x2, PCIe Gen2 x1)
Sequential Read: Up to 7300MB/s Sequential Write: Up to 6600MB/s (1TB models up to 6300MB/s)
Manufacturer's Warranty: 5 years at a domestic agent with maximum durability (TBW) limits (if the seller warrants the condition of each seller's warranty will be listed)
Compatible with PlayStation 5 (models with heatsink only)

Full Specifications

Brand	Western Digital
Color	Black
Model Name	WD_Black
Read Speed	7300 megabytes_per_second
Unit Count	1 Count
Form Factor	M2
Media Speed	6600
Model Number	WDBB9G0040BNC-WRSN
Hard-Drive Size	4 TB
Mfr Part Number	WDBB9G0040BNC
Number of Items	1
Sequential Read	Up to 7300MB/s Sequential Write: Up to 6600MB/s (1TB models up to 6300MB/s)
Special Feature	PlayStation5 Tested to Work
Installation Type	Built In
Compatible Devices	Desktop
Data Transfer Rate	7300 megabytes_per_second
Enclosure Material	Nand Flash
Additional Features	PlayStation5 Tested to Work
Hard Disk Interface	Solid State
Hard Disk Description	Solid State Drive

Ready to buy?

Amazon shows no buyable offer for Western Digital 4TB SN850X M.2 2280 Gaming SSD… at the last check. The closest in-stock match with the same 4TB PCIe 4.0 NVMe is INLAND 4TB Gaming NVMe SSD Internal Solid State…. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

View Current Price — $675.99