SanDisk X400 512GB vs Optimus 5100 4TB SSD Comparison

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SanDisk X400 512GB	SANDISK Optimus 5100 4TB
Prices (Change region) Out of Stock Free shipping $179.99 - Buy now	Prices (Change region) In Stock $599.99 Out of Stock Free shipping $750.85 In Stock + $11.20 Shipping $1,399.99
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Brand SanDisk	Brand SanDisk
Model SanDisk X400 SSD SATA 2.5"	Model SDSP51400TAN-000E0 SDSP51400TAN
Release Date 📅 January 2016	Release Date 📅 February 2026
* 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
Performance (Charts) 329th / 1746	Performance (Charts) n/a
Effective Value 300th / 336	Effective Value -
Price history View Details ►	Price history View Details ►
Price/GB -	Price/GB $0.15
GB/$1 -	GB/$1 6.67
Series -	Series Optimus 5100
Capacity -	Capacity 4000 GB
Interface -	Interface PCIe Gen4 x4
NVME -	NVME Yes
Form Factor -	Form Factor M.2-2280
NAND Flash Type -	NAND Flash Type QLC 3D CBA NAND
Cache -	Cache No DRAM (SLC)
Max Sequential Read -	Max Sequential Read Up to 6900 MB/s
Max Sequential Write -	Max Sequential Write Up to 6700 MB/s
MTBF -	MTBF 1,750,000 hours