Addlink S91 2TB PCIe Gen4 NVMe SSD Review

Memory (DDR4/DDR5) and Storage (SSD/NVMe) 378 Page 4 of 15 Published by

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Product Showcase

The M.2 2230 SSD is purpose-built to fit the highly compact form factor, measuring 22 mm in width and a mere 30 mm in length. It stands in contrast to the larger M.2 2280 drive, showcasing remarkable size reduction.


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To ensure seamless connectivity to the system, the SSD employs the PCI-Express 4.0 x4 interface. This interface doubles the theoretical bandwidth in comparison to the PCIe 3.0 x4, delivering enhanced performance.


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Upon inspecting the PCB, you will notice the presence of the SSD controller and a single flash chip. Unfortunately, this drive does not include a DRAM cache.


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The SSD controller utilized is the Phison PS5021-E21, which represents Phison's latest model specifically designed for PCI-Express 4.0. It presents a cost-effective solution with four flash channels, supporting TLC and QLC NAND technologies. Furthermore, the controller is engineered for efficient DRAM-less operation and adheres to the NVMe 1.4 protocol. Manufactured using the 12-nanometer process at TSMC Taiwan, this controller guarantees optimal performance.


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For the flash chip, the Micron 176-layer 3D QLC NAND is employed in this SSD, boasting an impressive capacity of 2 TB.

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