AMD Zen5C architecture has up to 192 cores, Zen 6 would get up to 32 cores per CCD

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Recent disclosures, including information from sources Kepler_L2 and InstLatX64, have revealed AMD’s next-generation processor architectures, Zen 5C and Zen 6. The upcoming Zen 5 architecture is set to be officially announced at the Computex event in June this year, with the first products expected to hit the market in the third quarter of 2024.The Zen 5 and Zen 5C core architectures are designed to be smaller than the current Zen 4 cores, allowing for the integration of more CCDs (Core Complex Dies) within the CPU package. While the existing Zen 4 architecture accommodates up to 12 CCDs on its highest-end EPYC chips, with the Zen 4C variant comprising up to 8 CCDs, each containing two CCXs with 8 cores for a total of 128 cores, the next generation is set to expand significantly.

In the Zen 5 architecture, AMD plans to utilize up to 16 CCDs, maintaining a single CCX per CCD that comprises 8 cores, achieving a maximum of 128 cores. The more advanced Zen 5C variant will further increase this capability by featuring a single CCX with 16 cores per CCD, pushing the upper limit to 192 cores across 12 CCDs.

For Zen 6, the architecture will offer versatile configurations including options of 8, 16, and up to 32 cores per CCD. This flexibility allows configurations like a dual-CCD Ryzen CPU to possess up to 32 cores, or a layout using four CCDs to reach 64 cores, expanding potential configurations and application suitability.

CCDNumber of cores per CCDCCX in each CCDMaximum number of cores
Zen 5C12161192
Zen 4C8162128
Zen 51681128
Zen 4128196

Significantly, the highest core counts will likely utilize the Zen 6C architecture, tailored for peak performance, while standard Non-C configurations will be reserved for enthusiast-grade parts. 

Source: ithome, @kepler

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