Specifications & Features

Kioxia has launched the Exceria PLUS G3 SSD in two storage capacities: 1TB and 2TB. Customers can choose between models with or without a heatsink. The 2TB model we tested is rated for an endurance of 1200 TBW. These SSDs employ TLC 3D NAND flash memory, a technology that offers increased storage volumes compared to Planar NAND. TLC 3D NAND involves vertically stacking NAND cells within a single integrated circuit, distinct from multi-chip package chip stacking. This structure results in reduced costs, smaller die sizes, and greater capacity per NAND chip. The SSDs are compatible with a PCIe 4.0 x4 M.2 slot and feature an NVMe interface. The combination of high-density TLC NAND and a Phison PS5021-E21 controller enables enhanced performance levels for single-drive SSDs.

Phison 5021-E21

The Phison PS5021-E21 is a new PCI-Express 4.0 controller from the company, which is designed to be a low-cost option with four flash channels and support for TLC and QLC NAND. It is designed for DRAM-free operation and supports the NVMe 1.4 protocol. The controller is built at TSMC Taiwan using a 12 nanometer process which results in performance and power gains of around 25% when compared to the E19T. The E21T has a similar design as its predecessors, consisting of a 4-channel controller operated by a single ARM core and Phison's proprietary coprocessors. However, the performance has been greatly improved and can now compete with high-end controllers like the E16 in terms of peak throughput. However, it's important to note that the real-world performance on heavy workloads may still be slower due to the downsides of a DRAMless controller design.