SANDISK Optimus GX PRO 850X 1TB vs SAMSUNG 870 EVO 500GB SSD Comparison

The main differences between SANDISK Optimus GX PRO 850X 1TB and SAMSUNG 870 EVO 500GB are in Capacity, Interface, NVME and Form Factor.

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SANDISK Optimus GX PRO 850X 1TB	SAMSUNG 870 EVO 500GB
Prices (Change region) In Stock Free shipping $294.99 In Stock $294.99 In Stock Free shipping $294.99 In Stock $329.99 In Stock Free shipping $329.99 Show 2 more offers	Prices (Change region) In Stock $54.99 In Stock Free shipping $247.95 In Stock $274.95 Last updated 37 minutes ago. In Stock Free shipping $299.99 In Stock Free shipping $299.99 In Stock Free shipping $299.99 In Stock $299.99 Out of Stock $400.52 Show 5 more offers
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Brand SanDisk	Brand SAMSUNG
Model SDSP81100TAN-000E0 SDSP81100TAN	Model MZ-77E500B/AM MZ-77E500B/EU MZ-77E500BW
Release Date 📅 February 2026	Release Date 📅 January 2021
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews Add a product review	User reviews ★★★★★ (24 reviews) Add a product review
Performance (Charts) n/a	Performance (Charts) 207th / 1746
Effective Value -	Effective Value 157th / 336
Price history View Details ►	Price history View Details ►
Price/GB $0.29	Price/GB $0.11
GB/$1 3.39	GB/$1 9.09
Series Optimus GX PRO 850X	Series 870 EVO Series
Capacity 1000 GB	Capacity 500 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 3D NAND TLC	NAND Flash Type V-NAND
Cache -	Cache 512MB
Max Sequential Read Up to 7300 MB/s	Max Sequential Read Up to 560 MB/s
Max Sequential Write Up to 6300 MB/s	Max Sequential Write Up to 530 MB/s
MTBF 1,750,000 hours	MTBF 1,500,000 hours