Packaging

The Drive

The drive uses the M.2 2280 form factor, making 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 Solidigm P44 Pro connects to the host system using PCI-Express 4.0 x4, doubling the theoretical bandwidth.


On the PCB you'll find the controller, two flash chips and a DRAM cache chip.


The 1 TB version looks exactly the same as the 2 TB version. It uses flash chips with half the capacity and a smaller DRAM cache chip.

Chip Component Analysis

The Hynix ACNS075 controller is a new in-house development by Hynix with support for PCI-Express 4.0. Unfortunately, not much is known about this controller yet.


The two flash chips are Hynix 176-layer 3D TLC NAND. Each chip has a capacity of 1 TB (on the 2 TB drive), and 512 GB (on the 1 TB drive).


One Hynix LPDDR4-4266 chip provides 2 GB of fast DRAM storage for the controller to store the mapping tables. On the 1 TB version a LPDDR4 DRAM chip with 1 GB capacity is used.