Packaging
The Drive
The drive uses the M.2 2280 form factor, which makes it 22 mm wide and 80 mm long.
While most other M.2 NVMe SSDs transfer data over the PCI-Express 3.0 x4 interface, the XPG Gammix S70 connects to the host system over a PCI-Express 4.0 x4 interface, which doubles the theoretical bandwidth.
On the PCB, you'll find the controller, four flash chips, and two DRAM chips.
ADATA created a large heatsink that can soak up quite some heat.
The mounting mechanism is also quite elaborate and much better than just a sticky thermal pad.
Chip Component Analysis
The Innogrit IG5236 is the company's first controller to support PCI-Express 4.0. It uses eight channels to maximize transfer rates and is fabricated on a 12 nm process at TSMC Taiwan.
The four flash chips seem to be Intel/Micron 96-layer 3D TLC NAND; they have been rebranded by ADATA. Each chip has a capacity of 512 GB.
Two Hynix DDR4-3200 chips provide a total of 2 GB of fast DRAM storage for the controller to store the mapping tables.