A CKD die sits between the memory controller and the DRAM chips on a DIMM, and Montage Technology's CK01P is now in mass production at 9200 MT/s for mainstream DDR5 modules. The chip conforms to the JEDEC DDR5CKD01 specification and targets CUDIMM, CSODIMM, CQDIMM, and CAMM form factors. Montage, a Chinese DRAM IC manufacturer, announced the production milestone on September 29, 2026, positioning the part for the next wave of client DDR5 modules.

The CK01P runs three clock driving modes: single PLL, double PLL, and PLL bypass. Its zero phase delay architecture allows programmable delay per channel, and the host memory controller can adjust output characteristics to match the DIMM network topology. Unused clock outputs shut down to reduce power draw on partially populated DIMMs. The design is aimed at the next generation of mainstream DDR5 standards beyond the current CUDIMM and CAMM wave, giving module designers a domestic alternative to incumbent CKD suppliers.

On the enterprise side, the RCD05 conforms to JEDEC DDR5RCD05 and pushes RDIMMs to 8000 MT/s, an 11% step over the RCD04 it replaces. The chip carries a low-jitter PLL clock drive circuit and supports CTLE, ZQ calibration, and improved signal integrity for server platforms. The 11% figure is Montage's own characterization of the speed differential between the two RCD generations, and it lands in the middle of a server refresh cycle where 8000 MT/s RDIMMs are becoming the new baseline for AI-adjacent workloads.

The document names no module vendor, no production volume, and no price. That omission matters: a CKD in mass production is not a module on a shelf. Montage's competitive position against Renesas and Rambus in the CKD/RCD segment depends on whether Chinese module assemblers will qualify the CK01P and RCD05 against incumbent parts. The 11% speed differential on RCD05 is a refresh-cycle argument, not a platform-breaking one, and the 9200 MT/s figure on CK01P is a CKD capability ceiling, not a validated module rating.

No page in the dossier measured power consumption, jitter figures, or thermal behavior under sustained load. No module SKU is validated, and no availability date is given. The next data point to watch is whether a named DIMM vendor ships a 9200 MT/s CUDIMM or CAMM with the CK01P, and whether the RCD05 clears qualification on a server platform before the next DDR5 RDIMM refresh window.

The document names no module vendor, no production volume, and no price, so a CKD in mass production is not yet a module on a shelf. Montage's position against Renesas and Rambus hinges on whether Chinese assemblers will qualify these parts against incumbents.

The 9200 MT/s figure is a CKD capability ceiling, not a validated module rating. The 11% RCD05 speed gain over RCD04 is a refresh-cycle increment, not a platform shift, and the absence of a named DIMM vendor means the part is unproven in a shipping configuration.