Western Digital WD_BLACK SN8100 1TB Heatsink vs SANDISK Optimus GX PRO 850X 1TB SSD Comparison

Western Digital WD_BLACK SN8100 1TB Heatsink and SANDISK Optimus GX PRO 850X 1TB are both solid state drives with the same Capacity (1000 GB) and Form Factor (M.2-2280). The main differences are in Interface.

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Western Digital WD_BLACK SN8100 1TB Heatsink	SANDISK Optimus GX PRO 850X 1TB
Prices (Change region) In Stock Free shipping $299.99 In Stock $299.99 In Stock Free shipping $299.99 In Stock $299.99 Show 1 more offers	Prices (Change region) In Stock $329.99 In Stock Free shipping $329.99 In Stock Free shipping $329.99 Out of Stock $329.99 Out of Stock Free shipping $387.88 Show 2 more offers
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Brand Western Digital	Brand SanDisk
Model WDS100T1XHM WDS100T1XHM-00CMT0	Model SDSP81100TAN-000E0 SDSP81100TAN
Release Date -	Release Date 📅 February 2026
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews ★★★★☆ (23 reviews) Add a product review	User reviews Add a product review
Performance (Charts) 15th / 1746	Performance (Charts) n/a
Effective Value 2nd / 336	Effective Value -
Price history View Details ►	Price history View Details ►
Price/GB $0.15	Price/GB $0.33
GB/$1 6.76	GB/$1 3.03
Capacity 1000 GB	Capacity 1000 GB
Interface PCIe Gen5 x4	Interface PCIe Gen4 x4
NVME Yes	NVME Yes
Form Factor M.2-2280	Form Factor M.2-2280
Max Sequential Read Up to 14900 MB/s	Max Sequential Read -
Max Sequential Write Up to 11000 MB/s	Max Sequential Write -
MTBF 1,750,000 Hours	MTBF -