Compare Solid State Drives

Compare SANDISK Optimus GX PRO 850X 4TB vs Ultra 3D 4TB

SANDISK Optimus GX PRO 850X 4TB and SanDisk Ultra 3D 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

SanDisk Ultra 3D 4TB

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Brand

SanDisk

Brand

SanDisk

Model

SDSP81400TAN-000E0
SDSP81400TAN

Model

SDSSDH3-4T00-G25

Release Date

📅 February 2026

Release Date

-

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

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User reviews

★★★★☆

(22 reviews)

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Price history

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Price history

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Price/GB

$0.33

Price/GB

$0.05

GB/$1

3.01

GB/$1

20

Series

-

Series

Ultra 3D

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"

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

-

Options (4)

	2TB $764.00
	250GB $32.99
	500GB $34.99
	1TB $359.50

Comparison and key differences summary

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

Newer interface (PCIe Gen4 x4)

Reasons to buy the SanDisk Ultra 3D 4TB:

70% cheaper, you can save $930.99

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