New Ryzen, Old Chipset? Early Information on Motherboards for Zen 6 CPUs

While AMD prepares for the debut of the future desktop platform based on Ryzen processors with Zen 6 architecture, codename Olympic Ridge, leaker MEGAsizeGPU has shared some information regarding the chipset of the new series 900 motherboards. According to reports, the motherboards will be powered by the same chip, but they will boast improvements both in terms of hardware and software.

According to rumors, the new series 900 chipsets may continue to use the Promontory 21 chip developed by ASMedia, which is already the basis of the current series 800 and previous series 600 solutions. This would mean that AMD is not planning a complete overhaul of the chipset, but a simple evolution of the platform through added functionalities, BIOS optimizations, and advanced capabilities.

It could be another PROM 21 refresh, but with full CUDIMM/CAMM support. Chipset-wise, it's the same as 600/800, but the BIOS and RAM support have undergone fundamental changes.

Source
— MEGAsizeGPU (@Zed__Wang)
May 6, 2026

The most relevant element concerns the new client I/O die (cIOD) of the Ryzen Olympic Ridge, which should be produced using a 4-nanometer process. This component would introduce next-generation controllers for DDR5 memory, designed to support higher DRAM frequencies, reduced latencies, and native compatibility with CUDIMM and CAMM DDR5 modules.

The motherboard compatibility with these new technologies could represent one of the distinguishing features of the AMD series 900 motherboards. In particular, support for CUDIMM and CAMM modules would provide a real advantage for enthusiast and professional users seeking greater bandwidth and flexibility in configuration.

AMD is also preparing the new EXPO 1.2 standard, intended for overclocking DDR5 memory. This revision is expected to offer specific profiles to fully leverage the new controllers. This move seems quite sensible, as memory performance remains the only real gap that has not been closed compared to Intel.

This early information adds to the rumors that the core limit will be increased to 24 cores, a full 50% more than the current high-end offerings. This would not only make the CPUs significantly more performing than solutions already on the market, but it would also close the only gap that remains compared to the competition, namely memory support.

In summary, if the information is confirmed, Zen 6 would represent the first true generational leap for the AM5 platform.