Packaging

The Drive

The drive is designed for the highly compact M.2 2230 form factor, which makes it 22 mm wide and only 30 mm long.


PCI-Express 4.0 x4 is used as the host interface to the rest of the system, which doubles the theoretical bandwidth compared to PCIe 3.0 x4.


On the PCB you'll find the SSD controller and one flash chip. A DRAM cache is not available.

Chip Component Analysis

The Phison PS5021-E21 is Phison's newest PCI-Express 4.0 controller. It's a cost-optimized model, with four flash channels and support for TLC and QLC NAND. Phison has designed the E21 for DRAM-less operation, and it supports the NVMe 1.4 protocol. The controller itself is fabricated using a 12 nanometer process at TSMC Taiwan.


There's just one flash chip, a Micron 176-layer 3D TLC NAND, with a capacity of 1 TB.