Western Digital BLACK SN850X 4TB + Heatsink vs SN850 1TB + Heatsink SSD Comparison

Western Digital BLACK SN850X 4TB + Heatsink and Western Digital SN850 1TB + Heatsink are both solid state drives with the same Interface (PCIe Gen4 x4), Form Factor (M.2-2280) and MTBF (1.75M Hours). The main differences are in Performance (+32%), Capacity, Max Sequential Read and Max Sequential Write.

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Western Digital BLACK SN850X 4TB + Heatsink

Western Digital SN850 1TB + Heatsink

Prices
(Change region)

In Stock

$649.99

Last updated 4 minutes ago.

In Stock

$649.99

In Stock

$649.99

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Prices
(Change region)

In Stock

Free shipping

$255.59

In Stock

$319.99

Last updated 1 minutes ago.

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Brand

Western Digital

Brand

Western Digital

Model

WDS400T2XHE
WDS400T2XHE-00BCA0
WDBB9H0040BNC-WRSN

Model

WDS100T1XHE

Release Date

📅 July 2024

Release Date

📅 March 2021

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

User reviews

★★★★☆

(107 reviews)

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User reviews

★★★★★

(60 reviews)

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Performance (Charts)

25th / 1746

(0%)

Performance (Charts)

43rd / 1746

(-32%)

Effective Value

120th / 336

Effective Value

24th / 336

Price history

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Price history

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Price/GB

$0.16

Price/GB

$0.10

GB/$1

6.15

GB/$1

9.71

Series

Black

Series

BLACK SN850 NVMe

Capacity

4000 GB

Capacity

1000 GB

Interface

PCIe Gen4 x4

Interface

PCIe Gen4 x4

NVME

Yes

NVME

Yes

Form Factor

M.2-2280

Form Factor

M.2-2280

SSD Controller

WD/SanDisk NVMe G2

NAND Flash Type

3D NAND

Max Sequential Read

Up to 7300 MB/s

Max Sequential Read

Up to 7000 MB/s

Max Sequential Write

Up to 6600 MB/s

Max Sequential Write

Up to 5300 MB/s

MTBF

1.75M Hours

MTBF

1.75M Hours

Options (7)

	1TB SSD $222.51
	2TB SSD w/ Heatsink $391.95
	8TB SSD $1,399.99
	1TB SSD w/ Heatsink $249.00
	2TB SSD $348.00
	4TB SSD $599.99
	8TB SSD w/ Heatsink $1,322.72

Options (6)

	2TB SSD $291.00
	1TB SSD $187.61
	500GB SSD $59.99
	1TB Call of Duty Special Edition $69.99
	2TB SSD with Heatsink $239.99
	500GB SSD with Heatsink $299.00