TrendForce reported that ChangXin Memory Technologies (CXMT) is supplying LPDDR5X mobile DRAM for the Nubia NaviX Ultra, a device jointly developed by ZTE and ByteDance. This inclusion establishes a multi-vendor memory supply system for a high-end Chinese smartphone, as Samsung Electronics is also providing LPDDR5X and flash memory for the model. For storage readers, this signals a structural shift in the mobile DRAM market, where domestic Chinese vendors are now competing directly with Korean incumbents in the flagship segment, potentially altering pricing and supply allocation dynamics in the region.
CXMT LPDDR5X speed parity at 10.667Gbps
CXMT began mass production of LPDDR5X in May of the previous year with maximum data transfer speeds of around 8.533Gbps and 9.6Gbps, which trailed products from Samsung Electronics and SK hynix. In just over a year, CXMT has raised the maximum speed to 10.667Gbps. Based on data transfer speed alone, its LPDDR5X has essentially reached the same level as the top-tier 10.7Gbps-class products from Samsung and SK hynix, closing a gap that previously kept Chinese memory out of top-tier flagships.
Power efficiency and yield gaps narrowing
Despite the speed parity, the report cautions that mobile DRAM competitiveness depends on more than data transfer speed, with power efficiency, heat generation, and yield also playing important roles. These gaps have previously led Chinese smartphone makers to use CXMT memory mainly in low- to mid-range models while relying on Korean memory for their top-tier flagships. That divide, however, is beginning to narrow as CXMT increasingly moves into flagship devices, suggesting that non-speed metrics are becoming less of a barrier to entry for high-end applications.
LPDDR6 mass production in Xiaomi 18 Fold
CXMT announced on September 7 that its LPDDR6 has entered mass production and is being used in Xiaomi’s 18 Fold flagship foldable smartphone. The company claims this is the world’s first commercial deployment of LPDDR6 in a flagship phone. The 16GB chip supports data rates of up to 12.8Gbps, or 10.667Gbps when operating with the SoC, while delivering 60% higher bandwidth and 20% lower power consumption than its LPDDR5X predecessor. This aggressive roadmap underscores CXMT’s push to accelerate the transition to next-generation mobile memory standards.
Market impact on LPDDR5X pricing
The inclusion of CXMT in the supply chain for the Nubia NaviX Ultra signals a structural shift in the mobile DRAM market. For buyers, this introduces a new competitive dynamic where domestic Chinese memory vendors can now compete directly with Korean incumbents in the flagship segment. This could pressure pricing and supply allocation for LPDDR5X, particularly in the Chinese market. For suppliers, it validates CXMT’s technological progress in closing the speed gap with Samsung and SK hynix, although non-speed metrics like power efficiency and yield remain critical differentiators.
LPDDR6 roadmap and capacity planning
The simultaneous mass production of LPDDR6 by CXMT further underscores its aggressive roadmap, potentially accelerating the transition to next-generation mobile memory standards and impacting capacity planning for traditional DRAM suppliers. As CXMT expands its LPDDR6 portfolio with performance, design, and process upgrades, it aims to drive broader deployment across more scenarios, including smartphones, PCs, smart wearables, smart vehicles, edge servers, and robotics. This expansion could reshape the competitive landscape for mobile memory, with implications for both supply and demand in the broader semiconductor market.