Western Digital BLACK SN850X 4TB vs Blue 4TB WDS400T2B0A SSD Comparison

Western Digital BLACK SN850X 4TB and Western Digital Blue 4TB WDS400T2B0A are both solid state drives with the same Capacity (4000 GB). The main differences are in Interface, NVME, Form Factor and NAND Flash Type.

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Western Digital BLACK SN850X 4TB

Western Digital Blue 4TB WDS400T2B0A

Prices
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In Stock

$599.99

Last updated 44 minutes ago.

In Stock

$599.99

Out of Stock

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$599.99

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Prices
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Out of Stock

Free shipping

$249.99

Out of Stock

$249.99

Out of Stock

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$259.99

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Brand

Western Digital

Brand

Western Digital

Model

WDS400T2X0E

Model

WDS400T2B0A

Release Date

📅 August 2022

Release Date

* First availability for purchase, it may not correspond to the actual market launch date.

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User reviews

★★★★★

(300 reviews)

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Performance (Charts)

25th / 1746

Performance (Charts)

n/a

Effective Value

63rd / 336

Effective Value

Price history

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Price history

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Price/GB

$0.08

Price/GB

$0.06

GB/$1

12.9

GB/$1

Series

BLACK SN850X NVMe

Series

Blue

Capacity

4000 GB

Capacity

4000 GB

Interface

PCIe Gen4 x4

Interface

SATA 6 Gb/s

NVME

Yes

NVME

Form Factor

M.2-2280

Form Factor

2.5"

SSD Controller

20-82-20035-B1

SSD Controller

NAND Flash Type

BiCS5 112-layer TLC

NAND Flash Type

3D NAND

Max Sequential Read

Up to 7300 MB/s

Max Sequential Read

Up to 560 MB/s

Max Sequential Write

Up to 6600 MB/s

Max Sequential Write

Up to 530 MB/s

MTBF

1.75M Hours

MTBF

Up to 1.75M hours

Options (10)

	SN850 w/ Heatsink - Up to 7,000 MB/s 1TB $255.59
	SN850X - Up to 7,300 MB/s 2TB $348.00
	SN850 - Up to 7,000 MB/s 500GB $59.99
	SN850 w/ Heatsink - Up to 7,000 MB/s 500GB $299.00
	SN850 w/ Heatsink - Up to 7,000 MB/s 2TB $239.99
	SN850 - Up to 7,000 MB/s 2TB $291.00
	SN850X - Up to 7,300 MB/s 1TB $222.51
	SN850 - Up to 7,000 MB/s 1TB $187.61
	SN850X w/ Heatsink - Up to 7,300 MB/s 2TB $391.95
	SN850X w/ Heatsink - Up to 7,300 MB/s 1TB $249.00