Compare Solid State Drives

Compare Western Digital WD_BLACK SN8100 4TB vs WD_BLACK SN7100 500GB

Western Digital WD_BLACK SN8100 4TB and Western Digital WD_BLACK SN7100 500GB are both solid state drives with the same Form Factor (M.2-2280) and MTBF (1,750,000 Hours). The main differences are in Capacity, Interface, Max Sequential Read and Max Sequential Write.

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Western Digital WD_BLACK SN8100 4TB

Western Digital WD_BLACK SN7100 500GB

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Brand

Western Digital

Brand

Western Digital

Model

WDS400T1X0M
WDS400T1X0M-00CMT0

Model

WDS500G4X0E-00CJA0
WDS500G4X0E

Release Date

📅 May 2025

Release Date

📅 December 2024

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

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Performance (Charts)

1st / 1746

Performance (Charts)

n/a

Effective Value

84th / 336

Effective Value

-

Price history

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Price history

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Price/GB

$0.20

Price/GB

$0.12

GB/$1

5.06

GB/$1

8.33

Series

-

Series

SN7100

Capacity

4000 GB

Capacity

500 GB

Interface

PCIe Gen5 x4

Interface

PCIe Gen4 x4

NVME

Yes

NVME

Yes

Form Factor

M.2-2280

Form Factor

M.2-2280

NAND Flash Type

-

NAND Flash Type

TLC 3D NAND

Max Sequential Read

Up to 14900 MB/s

Max Sequential Read

Up to 6800 MB/s

Max Sequential Write

Up to 14000 MB/s

Max Sequential Write

Up to 5800 MB/s

MTBF

1,750,000 Hours

MTBF

1,750,000 hours

Options (2)

	2TB $439.00
	1TB $247.00

-

Comparison and key differences summary

Reasons to buy the Western Digital WD_BLACK SN8100 4TB:

More Capacity (+3500 GB available)
Newer interface (PCIe Gen5 x4)

Reasons to buy the Western Digital WD_BLACK SN7100 500GB:

82% cheaper, you can save $647.56

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