SANDISK Optimus GX PRO 850X 4TB vs Corsair MP700 Micro 4TB SSD Comparison

SANDISK Optimus GX PRO 850X 4TB and Corsair MP700 Micro 4TB are both solid state drives with the same Capacity (4000 GB), Interface (PCIe Gen4 x4) and NAND Flash Type (3D NAND TLC). The main differences are in Form Factor, Max Sequential Read and Max Sequential Write.

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SANDISK Optimus GX PRO 850X 4TB	Corsair MP700 Micro 4TB
Prices (Change region) In Stock $999.99 In Stock Free shipping $999.99 In Stock Free shipping $999.99 Out of Stock $999.99 Out of Stock Free shipping $1,517.50 Show 2 more offers	Prices (Change region) In Stock $909.39 Last updated 21 minutes ago. Out of Stock Free shipping $959.97
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Brand SanDisk	Brand Corsair
Model SDSP81400TAN-000E0 SDSP81400TAN	Model CSSD-F4000GBMP700MCR
Release Date 📅 February 2026	Release Date 📅 October 2025
* 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 $0.25	Price/GB $0.23
GB/$1 4	GB/$1 4.4
Series Optimus GX PRO 850X	Series MP700 MICRO
Capacity 4000 GB	Capacity 4000 GB
Interface PCIe Gen4 x4	Interface PCIe Gen4 x4
NVME Yes	NVME Yes
Form Factor M.2-2280	Form Factor M.2-2242
SSD Controller -	SSD Controller PS5031-E31T
NAND Flash Type 3D NAND TLC	NAND Flash Type 3D NAND TLC
Max Sequential Read Up to 7300 MB/s	Max Sequential Read Up to 9,400 MB/s
Max Sequential Write Up to 6600 MB/s	Max Sequential Write Up to 8,100 MB/s
MTBF 1,750,000 hours	MTBF -