SANDISK Optimus GX PRO 850X 4TB vs HP S700 PRO 128GB SSD Comparison

SANDISK Optimus GX PRO 850X 4TB and HP S700 PRO 128GB are both solid state drives with the same Form Factor (M.2-2280). The main differences are in Capacity, Interface and NVME.

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SANDISK Optimus GX PRO 850X 4TB	HP S700 PRO 128GB
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 In Stock Free shipping $1,517.50 Show 2 more offers	Prices (Change region) Out of Stock Free shipping $19.99 Out of Stock Free shipping $36.99 - Buy now
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Brand SanDisk	Brand HP
Model SDSP81400TAN-000E0 SDSP81400TAN	Model 2LU74AA#ABC
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 ★★★☆☆ (2 reviews) Add a product review
Performance (Charts) n/a	Performance (Charts) 317th / 1746
Effective Value -	Effective Value 131st / 336
Price history View Details ►	Price history View Details ►
Price/GB $0.33	Price/GB $0.16
GB/$1 3.01	GB/$1 6.4
Series -	Series S700 Pro
Capacity 4000 GB	Capacity 128 GB
Interface PCIe Gen4 x4	Interface SATA 6 Gb/s
NVME Yes	NVME No
Form Factor M.2-2280	Form Factor M.2-2280
NAND Flash Type -	NAND Flash Type 3D NAND
Max Sequential Read -	Max Sequential Read Up to 564 MB/s
Max Sequential Write -	Max Sequential Write Up to 436 MB/s
MTBF -	MTBF 2,000,000 hours