PCIe 5.0 SSDs are starting to split into two categories. Some focus on lower power use for thin laptops, while others push for maximum bandwidth even if cooling becomes more demanding. Kioxia’s new XG10 series clearly falls into the second group.
The XG10 replaces the older XG8 lineup and moves Kioxia’s high-performance OEM storage family to PCIe 5.0 for the first time. Read speeds can reach up to 14,000 MB/s, while writes are rated as high as 12,000 MB/s. Random performance also climbs to 2 million read IOPS and 1.6 million write IOPS.
Compared to the previous XG8 generation, Kioxia claims up to 2× faster sequential reads, more than 2× higher sequential write speeds, along with roughly 122% better random reads and 158% higher random write performance.
One detail that stands out is the NAND configuration across capacities. The 512GB and 1TB models use sixth-generation BiCS TLC flash, while the 2TB and 4TB versions move to newer eighth-generation BiCS TLC NAND with CBA technology, short for CMOS directly Bonded to Array. Higher-capacity models are expected to benefit more from the newer flash design, especially during sustained workloads and heavier transfers.
Kioxia is also separating the XG10 from its recently introduced BG8 and EG7 SSD families through controller design. Those drives rely on DRAM-less controllers with Host Memory Buffer support, while the XG10 uses a higher-end 8-channel controller paired with onboard DRAM. That difference matters because DRAM-equipped SSDs generally handle sustained workloads, multitasking, and large file operations more consistently than lower-power DRAM-less designs.
Power consumption moves higher as well. Active power is listed at around 10W, noticeably above the BG8 and EG7 series. That is worth paying attention to because PCIe 5.0 SSDs already generate more heat than many Gen4 drives. Thin laptops and compact desktops may need stronger cooling or larger heatsinks to keep performance stable during longer transfers or heavy workloads.
The XG10 series uses the standard M.2 2280 form factor and supports PCIe 5.0 x4 alongside NVMe 2.0d. Capacities range from 512GB to 4TB, and Kioxia is also including self-encrypting drive support based on TCG Opal 2.02 for security-focused deployments.
Kioxia is targeting the XG10 series at gaming systems, AI PCs, mobile workstations, and content creation laptops where faster storage can improve loading times and large file handling. The drives are currently sampling to OEM partners, with systems using the new SSDs expected to begin shipping during the second quarter of 2026. Kioxia will also showcase the XG10 lineup at Dell Technologies World later this month.
Source: Kioxia Press
