Corsair MP400 4TB vs SANDISK Optimus GX PRO 850X 1TB SSD Comparison

Corsair MP400 4TB and SANDISK Optimus GX PRO 850X 1TB are both solid state drives with the same Form Factor (M.2-2280). The main differences are in Capacity, Interface, NAND Flash Type and Max Sequential Read.

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Corsair MP400 4TB	SANDISK Optimus GX PRO 850X 1TB
Prices (Change region) In Stock Free shipping $599.00	Prices (Change region) In Stock $294.99 In Stock Free shipping $294.99 In Stock $294.99 In Stock Free shipping $294.99 In Stock Free shipping $294.99 Show 2 more offers
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Brand Corsair	Brand SanDisk
Model CSSD-F4000GBMP400	Model SDSP81100TAN-000E0 SDSP81100TAN
Release Date 📅 October 2020	Release Date 📅 February 2026
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews ★★★★★ (1 reviews) Add a product review	User reviews Add a product review
Price history View Details ►	Price history View Details ►
Price/GB $0.15	Price/GB $0.29
GB/$1 6.68	GB/$1 3.39
Series MP400	Series Optimus GX PRO 850X
Capacity 4000 GB	Capacity 1000 GB
Interface PCIe Gen3 x4	Interface PCIe Gen4 x4
NVME Yes	NVME Yes
Form Factor M.2-2280	Form Factor M.2-2280
SSD Controller Phison E12S	SSD Controller -
NAND Flash Type 3D QLC	NAND Flash Type 3D NAND TLC
Max Sequential Read Up to 3480 MB/s	Max Sequential Read Up to 7300 MB/s
Max Sequential Write Up to 3000 MB/s	Max Sequential Write Up to 6300 MB/s
MTBF 1,800,000 hours	MTBF 1,750,000 hours