SANDISK Optimus GX PRO 850X 4TB vs fanxiang S900 1TB SSD Comparison

SANDISK Optimus GX PRO 850X 4TB and fanxiang S900 1TB are both solid state drives with the same Form Factor (M.2-2280). The main differences are in Capacity and Interface.

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SANDISK Optimus GX PRO 850X 4TB	fanxiang S900 1TB
Prices (Change region) In Stock $1,329.99 In Stock Free shipping $1,329.99 In Stock $1,329.99 In Stock Free shipping $1,329.99 Out of Stock Free shipping $1,517.50 Show 2 more offers	Prices (Change region) - Buy now
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Brand SanDisk	Brand fanxiang
Model SDSP81400TAN-000E0 SDSP81400TAN	Model PCIe 5.0 SSD - M.2 - 1TB - S900
Release Date 📅 February 2026	Release Date -
* 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
Price history View Details ►	Price history View Details ►
Price/GB $0.33	Price/GB -
GB/$1 3.01	GB/$1 -
Series Optimus GX PRO 850X	Series -
Capacity 4000 GB	Capacity 1000 GB
Interface PCIe Gen4 x4	Interface PCIe Gen5 x4
NVME Yes	NVME Yes
Form Factor M.2-2280	Form Factor M.2-2280
NAND Flash Type 3D NAND TLC	NAND Flash Type -
Max Sequential Read Up to 7300 MB/s	Max Sequential Read -
Max Sequential Write Up to 6600 MB/s	Max Sequential Write -
MTBF 1,750,000 hours	MTBF -