By TechPowerUp
Publication Date: 2026-08-20 08:10:00
Introduction
The Kioxia brand was established around 2018/2019, after Toshiba sold its SSD and memory branch “Toshiba Memory.” The company now produces flash memory for its own products, but also WD and Sandisk. Part of the original Toshiba SSD business was formed in 2014, when Toshiba bought the famous OCZ brand. Kioxia later acquired the SSD maker Lite-On. Unfortunately, first party Kioxia SSD products are not available in the United States.
The Kioxia Exceria Pro G2 is the company’s new PCI-Express Gen 5 flagship for the consumer market and the successor to the Gen 4 Exceria Pro. It launched in December last year and we finally got a sample. Kioxia rates our 4 TB unit at 14.9 GB/s sequential read and 13.7 GB/s sequential write, with up to 2.3 million random read IOPS and 1.95 million write IOPS.
The Kioxia Exceria Pro G2 is built around the new Silicon Motion SM2508 controller, which focuses on efficiency to help keep thermal output in check. This is the same controller we’ve seen in several other recent Gen 5 drives such as the WD Black SN8100, Acer Predator GM9000, Kingston Fury Renegade, and Lexar NM1090.
As NAND flash, Kioxia’s own BiCS8 218-layer TLC NAND flash is used, configured in a single-sided design with just two NAND packages, despite the massive 4 TB capacity. The Exceria Pro G2 also includes a 4 GB LPDDR4X DRAM cache, ensuring smooth handling of the SSD’s internal mapping tables and sustained performance under heavy workloads.
Since Kioxia doesn’t sell the…
