Western Digital

BLACK M.2 内蔵 2TB NVMe PCIe Gen4 x4 (読取り最大 7300MB/s 書込み最大 6600MB/s) ゲーミング PC S200T2X0E-EC SN850X 【国内正規取扱代理店】

Name: BLACK M.2 内蔵 2TB NVMe PCIe Gen4 x4 (読取り最大 7300MB/s 書込み最大 6600MB/s) ゲーミング PC S200T2X0E-EC SN850X 【国内正規取扱代理店】
Brand: Western Digital
SKU: B0BBL2N1QS

Status: BLACK M.2 内蔵 2TB NVMe PCIe Gen4 x4 (2TB PCIe 4.0 NVMe SSD): Unavailable on Amazon as of 2026-10-04 10:27 UTC. Closest in-stock match (same 2TB PCIe 4.0 NVMe): WD_BLACK 2TB SN770 NVMe Internal Gaming SSD…, $440.00 on Amazon as of 2026-10-07 04:20 UTC (price may vary). eBay sellers may still list this model new or used.

View Current Price — $440.00 🛒 Search eBay for this model

Bottom line: The BLACK M.2 内蔵 2TB NVMe PCIe Gen4 x4 ゲーミング PC SN850X 【国内正規取扱代理店】: Sequential reads up to 7300MB/s, writes to 6600MB/s on PCIe Gen4 x4; main trade-off: gen4 x4 drive; needs a Gen4 M.2 slot to hit rated speeds.

Unavailable on Amazon as of 2026-10-04 10:27 UTC

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

Same 2TB PCIe 4.0 NVMe: WD_BLACK 2TB SN770 NVMe Internal Gaming SSD… — $440.00 on Amazon as of 2026-10-07 04:20 UTC (price may vary).

View Current Price — $440.00

Same 2TB PCIe 4.0 NVMe: Seagate Game Drive PS5 NVMe SSD for PS5 2TB… — $829.99 on Amazon as of 2026-10-07 04:14 UTC (price may vary).

View Current Price — $829.99

Same 2TB PCIe 4.0 NVMe: Crucial P310 2TB SSD — $249.89 on Amazon as of 2026-10-07 04:20 UTC (price may vary).

View Current Price — $249.89

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

By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-04

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

✓ Sequential reads up to 7300MB/s, writes to 6600MB/s on PCIe Gen4 x4
✓ Roomy 2TB capacity for large game libraries and Windows installs
✓ WD Black SN850X silicon tuned for gaming load times
✓ Domestic authorized-distributor stock (国内正規取扱代理店)

Cons

✗ Gen4 x4 drive; needs a Gen4 M.2 slot to hit rated speeds
✗ No listed heatsink, so sustained writes may thermal-throttle
✗ PCIe Gen5 SSDs now push past 12000MB/s for future builds
✗ Japanese-market packaging and documentation

Manufacturer description

USB+SSD

SpecPicks Verdict

SpecPicks scored BLACK M.2 内蔵 2TB NVMe PCIe Gen4 x4 ゲーミング PC SN850X 【国内正規取扱代理店】 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.

Full Specifications

Brand	Western Digital
Color	Black
Model Name	SN850X
Read Speed	7300 megabytes_per_second
Unit Count	1 Count
Form Factor	M2
Media Speed	6600 MB/s
Model Number	WDS200T2X0E-EC
Compatibility	PC
Hard-Drive Size	2 TB
Mfr Part Number	WDS200T2X0E-EC
Number of Items	1
Special Feature	Portable
Installation Type	Internal Hard Drive
Compatible Devices	Desktop
Data Transfer Rate	16 gigabits_per_second
Additional Features	Portable
Hard Disk Interface	PCIE x 4
Hard Disk Description	ソリッドステートドライブ
Hard Disk Form Factor	2.5 inches

Ready to buy?

Amazon shows no buyable offer for BLACK M.2 内蔵 2TB NVMe PCIe Gen4 x4 at the last check. The closest in-stock match with the same 2TB PCIe 4.0 NVMe is WD_BLACK 2TB SN770 NVMe Internal Gaming SSD…. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

View Current Price — $440.00