Compare Solid State Drives

Compare SANDISK Optimus GX PRO 850X 4TB vs Samsung 860 PRO 4TB

SANDISK Optimus GX PRO 850X 4TB and Samsung 860 PRO 4TB are both solid state drives with the same Capacity (4000 GB). The main differences are in Interface, NVME and Form Factor.

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SANDISK Optimus GX PRO 850X 4TB

Samsung 860 PRO 4TB

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Brand

SanDisk

Brand

Samsung

Model

SDSP81400TAN-000E0
SDSP81400TAN

Model

MZ-76P4T0BW
MZ-76P4T0B/EU

Release Date

📅 February 2026

Release Date

📅 May 2019

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

User reviews

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User reviews

★★★★★

(107 reviews)

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Performance (Charts)

n/a

Performance (Charts)

200th / 1746

Effective Value

-

Effective Value

325th / 336

Price history

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Price history

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Price/GB

$0.33

Price/GB

$0.18

GB/$1

3.01

GB/$1

5.48

Series

-

Series

860 Pro Series

Capacity

4000 GB

Capacity

4000 GB

Interface

PCIe Gen4 x4

Interface

SATA 6 Gb/s

NVME

Yes

NVME

No

Form Factor

M.2-2280

Form Factor

2.5"

SSD Controller

-

SSD Controller

Samsung MJX

NAND Flash Type

-

NAND Flash Type

3D NAND

Max Sequential Read

-

Max Sequential Read

Up to 560 MB/s

Max Sequential Write

-

Max Sequential Write

Up to 530 MB/s

MTBF

-

MTBF

1,500,000 hours

-

Options (4)

	1 TB $464.45
	2 TB $749.99
	256 GB $279.99
	512 GB $349.99

Comparison and key differences summary

Reasons to buy the SANDISK Optimus GX PRO 850X 4TB:

Newer Product, it was released around 7 years later
Newer interface (PCIe Gen4 x4)

Reasons to buy the Samsung 860 PRO 4TB:

8% cheaper, you can save $105.00

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