Western Digital BLACK SN850X 2TB vs SANDISK Optimus GX 7100 2TB SSD Comparison

Western Digital BLACK SN850X 2TB and SANDISK Optimus GX 7100 2TB are both solid state drives with the same Capacity (2000 GB), Interface (PCIe Gen4 x4) and Form Factor (M.2-2280). The main differences are in NAND Flash Type, Max Sequential Read, Max Sequential Write and MTBF.

Save comparison

Western Digital BLACK SN850X 2TB	SANDISK Optimus GX 7100 2TB
Prices (Change region) Out of Stock Free shipping $321.50 In Stock Free shipping $344.99 (~~$349.99~~) $5.00 off w/ promo code: FTTF6437, ends 6/28 In Stock $349.99 Last updated 29 minutes ago. Out of Stock $629.99 Show 1 more offers	Prices (Change region) In Stock $314.99 Last updated 32 minutes ago. In Stock $539.99 In Stock Free shipping $539.99 In Stock $539.99 In Stock Free shipping $539.99 Out of Stock Free shipping $552.26 Show 3 more offers
* Pangoly may earn a commission when you use one of the links to make a purchase. (Disclosure) * Product prices and availability are subject to change frequently. Any price and availability information displayed on Amazon at the time of purchase will apply.
Brand Western Digital	Brand SanDisk
Model WDS200T2X0E	Model SDSP71200TAN-000E0 SDSP71200TAN
Release Date 📅 August 2022	Release Date 📅 February 2026
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews Add a product review	User reviews Add a product review
Performance (Charts) 31st / 1746	Performance (Charts) n/a
Effective Value 26th / 336	Effective Value -
Price history View Details ►	Price history View Details ►
Price/GB $0.16	Price/GB $0.16
GB/$1 6.22	GB/$1 6.35
Series BLACK SN850X NVMe	Series Optimus GX 7100
Capacity 2000 GB	Capacity 2000 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 20-82-20035-B1	SSD Controller -
NAND Flash Type BiCS5 112-layer TLC	NAND Flash Type 3D NAND TLC
Max Sequential Read Up to 7300 MB/s	Max Sequential Read Up to 7250 MB/s
Max Sequential Write Up to 6600 MB/s	Max Sequential Write Up to 6900 MB/s
MTBF 1.75M Hours	MTBF 1,750,000 hours