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Solid state drives » WD » BLACK SN850X 4TB with heatsink

WD BLACK SN850X 4TB with heatsink

Name: WD BLACK SN850X 4TB with heatsink
Brand: WD

Factory heatsink MPN: WDS400T2XHE

€999.00

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4000 GB • PCIe 4.0 ×4 / NVMe • M.2 2280 • 7300 MB/s

€249.75 / TB · confirmed delivered total

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YorcomIn stock€0.00€999.00View ↗Price checked: 23/10/2026, 16:07 (Amsterdam time)

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Price history

Latest day minimum: €999.00
Lowest measured: €999.00
Highest day minimum: €999.00
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Lowest measured total per UTC day2026-10-23 · €999.00

Our confirmed totals include known delivery and import costs. Lines only connect adjacent measured days; gaps stay open.

2 measurements · 1 / 30 measured days29 days without data · Last measured day: 0 days ago

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Day (UTC)	Lowest measured total	Measurements
2026-10-23	€999.00	2

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Specifications

Compare capacity and cache, not just peak speed

Manufacturer speeds are maxima under stated test conditions. They do not show sustained writing after the cache fills. TBW is a write-endurance warranty limit, not a predicted failure date; time limits also apply. Check M.2 length, interface and heatsink clearance in the host manual. Price per TB uses nominal decimal capacity and a confirmed delivered total.

Capacity	4000 GB
Interface	PCIe 4.0 ×4 / NVMe
Form factor	M.2 2280
Sequential read, up to	7300 MB/s
Sequential write, up to	6600 MB/s
NAND type	TLC 3D NAND
DRAM cache	Unknown
Endurance	2400 TBW
Limited warranty, up to	5 years
Controller	Unknown
Random read, up to	1200000 IOPS
Factory heatsink	Yes
Drive height, up to	10.31 mm
Cache arrangement	Unknown

Manufacturer source ↗ · Specifications checked: 2026-10-23

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Variant: Factory heatsink
Manufacturer part number (MPN): WDS400T2XHE
EAN / GTIN: Not verified

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