Intel is set to transition from the longstanding "Family 6" CPU ID identifier, which has been in use for nearly three decades, to a new "Family 19" identifier for its upcoming Diamond Rapids processors. On September 23rd, Intel engineers submitted a patch to the Linux kernel, officially confirming that the next-generation Xeon performance core processor, Diamond Rapids, succeeding Granite Rapids, will adopt the "Family 19" CPU ID header. This marks a significant shift in Intel’s processor identification scheme, moving away from the format established with the sixth-generation x86 microarchitecture CPU Pentium Pro in 1995. Historically, Intel’s CPU IDs have followed the "Family 6 Model XX" format, a convention that has been consistent until now. The introduction of "Family 19" indicates the end of the nearly 30-year usage of "Family 6" for future processors, although existing models like Panther Lake will continue to utilize the "Family 6 Model 204" identifier.

The submitted patch also reveals that Diamond Rapids will be built on the new Panther Cove X microarchitecture. While detailed specifications of the Diamond Rapids processor remain limited, preliminary information indicates support for PCIe 6.0 and Compute Express Link (CXL) 3.0 technologies. These advancements suggest improved data transfer rates and enhanced interconnect capabilities, which are critical for high-performance computing applications. The Diamond Rapids series is expected to be compatible with the Oak Stream platform, providing a robust foundation for enterprise and data center environments. Additionally, the -AP variant of Diamond Rapids, which is anticipated to feature a higher core count, will likely utilize the LGA9324 socket, facilitating greater processing power and scalability for demanding workloads.

The shift to "Family 19" not only signifies a new chapter in Intel’s CPU development but also aligns with the evolving needs of modern computing infrastructures. By incorporating PCIe 6.0 and CXL 3.0, Diamond Rapids is poised to deliver superior bandwidth and reduced latency, essential for applications such as artificial intelligence, machine learning, and large-scale data analytics. The adoption of the Panther Cove X microarchitecture is expected to bring architectural improvements that enhance efficiency and processing capabilities.

Source: ithome