SANDISK Optimus GX PRO 850X 1TB Heatsink vs ADATA XPG GAMMIX S55 512GB SSD Comparison

SANDISK Optimus GX PRO 850X 1TB Heatsink and ADATA XPG GAMMIX S55 512GB are both solid state drives with the same Interface (PCIe Gen4 x4). The main differences are in Capacity and Form Factor.

Save comparison

SANDISK Optimus GX PRO 850X 1TB Heatsink	ADATA XPG GAMMIX S55 512GB
Prices (Change region) In Stock Free shipping $349.99 In Stock Free shipping $349.99	Prices (Change region) Out of Stock Free shipping $39.99 Out of Stock $91.57 Out of Stock Free shipping $135.72
* Pangoly may earn a commission when you use one of the links to make a purchase. (Disclosure)
Brand SanDisk	Brand ADATA
Model SDSP81100TAH-000E0 SDSP81100TAH	Model GAMMIXS55-512G-C SGAMMIXS55-512G-C
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 $0.35	Price/GB $0.08
GB/$1 2.86	GB/$1 12.8
Series -	Series GAMMIX S55
Capacity 1000 GB	Capacity 512 GB
Interface PCIe Gen4 x4	Interface PCIe Gen4 x4
NVME Yes	NVME Yes
Form Factor M.2-2280	Form Factor M.2-2230
SSD Controller -	SSD Controller ADATA
NAND Flash Type -	NAND Flash Type 3D NAND
Max Sequential Read -	Max Sequential Read Up to 5000 MB/s
Max Sequential Write -	Max Sequential Write Up to 3800 MB/s