Delay in large-scale manufacturing of DDR5 memory chips by China's state-backed tech giant, CXMT, presumably pushing their production to late 2025; potential for continued market disruption despite the delay.
In the rapidly evolving world of semiconductor production, China's state-funded entity, CXMT, is making strides towards improving China's self-sufficiency in DRAM production [6]. However, the company's DDR5 memory production is currently facing delays in mass production until late 2025, as CXMT works to improve the quality and yields of its DDR5 chips [3][5].
Initial testing of CXMT's DDR5 samples in early 2025 revealed stability issues at common temperatures and problems with operation at sub-zero temperatures [1]. Moreover, the company's DDR5 ICs are 40% larger compared to those produced by Samsung [2]. Despite advancements with thermals, yield rates on CXMT's production line are still relatively low, hovering just above 50% [2].
These quality and yield challenges are causing concern among global DRAM vendors, as CXMT represents a potential disruption in the DRAM market, particularly in China’s domestic supply chain [1]. CXMT's aggressive pricing and supply efforts are putting pressure on established vendors to accelerate their transitions to DDR5 and higher-performance memory segments like HBM (High-Bandwidth Memory) [1].
The company initially began producing DDR5 memory late last year, using an outdated process technology [4]. To address problems with operating at high or low temperatures, CXMT had to change the design of their DDR5 devices, requiring new photomasks [5]. These issues prevented modules based on CXMT's DDR5 ICs from meeting reliability standards [5].
Recent tests of CXMT's DDR5 modules indicate a significant leap in quality and performance, now said to be nearly on par with Taiwan's Nanya Technology [7]. However, CXMT's DDR5 DRAMs are significantly costlier to build compared to DDR5 chips by Samsung [5].
CXMT's suppliers, which include American, European, and Japanese companies, are crucial for the company's tool support, spare parts, and raw materials [2]. If these suppliers were to cease production or maintenance of existing fab equipment, CXMT's capacity expansion and quality improvement could be jeopardized [2].
Morgan Stanley estimates CXMT's 2024 production capacity at 170,000 300-mm wafer starts per month (WSPM), aiming to increase output to 240,000 300-mm WSPM per month in 2025 [4]. Digitimes reports even higher numbers, claiming 280,000 wafers per month by the end of 2025, with potential to grow to 300,000 [7].
Despite these challenges, CXMT remains a formidable prospective competitor for global DRAM makers, thanks to nearly unlimited funds from China's government [6]. Switching to fab equipment made in the People's Republic would take years for CXMT to adopt, tailor its process technologies, and ramp up mass production [6].
As CXMT continues to work on improving the quality and yields of its DDR5 chips, the global DRAM market will closely watch its progress, with potential implications for the industry's competitive landscape.
In the context of the global DRAM market, CXMT's financial backing from the Chinese government enables it to challenge established businesses in the industry as they strive to keep up with its aggressive supply efforts and transition to DDR5 and higher-performance memory segments like HBM [1]. The ongoing improvements in technology are crucial for CXMT, as they endeavor to resolve issues with the quality and yields of their DDR5 chips and meet industry standards [5].
