SANDISK Optimus GX 7100M 2TB vs WD_BLACK SN850 500GB + Heatsink SSD Comparison

SANDISK Optimus GX 7100M 2TB and WD_BLACK SN850 500GB + Heatsink are both solid state drives with the same Interface (PCIe Gen4 x4). The main differences are in Capacity and Form Factor.

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SANDISK Optimus GX 7100M 2TB

WD_BLACK SN850 500GB + Heatsink

Prices
(Change region)

In Stock

Free shipping

$599.99

In Stock

$708.92

Last updated 17 minutes ago.

Prices
(Change region)

In Stock

Free shipping

$299.00

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Brand

SanDisk

Brand

Western Digital

Model

SDSP71200TAT-000E0
SDSP71200TAT

Model

WDS500G1XHE

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/GB

$0.30

Price/GB

$0.14

GB/$1

3.33

GB/$1

7.14

Series

BLACK SN850 NVMe

Capacity

2000 GB

Capacity

500 GB

Interface

PCIe Gen4 x4

Interface

PCIe Gen4 x4

NVME

Yes

NVME

Yes

Form Factor

M.2-2230

Form Factor

M.2-2280

SSD Controller

WD/SanDisk NVMe G2

NAND Flash Type

3D NAND

Max Sequential Read

Up to 7000 MB/s

Max Sequential Write

Up to 4100 MB/s

MTBF

1.75M Hours

Options (1)

1TB
$299.99

Options (9)

	SN850 - Up to 7,000 MB/s 2TB $291.00
	SN850X - Up to 7,300 MB/s 2TB $349.00
	SN850 - Up to 7,000 MB/s 500GB $59.99
	SN850 w/ Heatsink - Up to 7,000 MB/s 1TB $255.59
	SN850X w/ Heatsink - Up to 7,300 MB/s 1TB $249.00
	SN850X - Up to 7,300 MB/s 1TB $222.51
	SN850 w/ Heatsink - Up to 7,000 MB/s 2TB $239.99
	SN850X w/ Heatsink - Up to 7,300 MB/s 2TB $391.95
	SN850 - Up to 7,000 MB/s 1TB $187.61