Intel ISA reference adds Razor Lake and Coral Rapids model IDs and features

Intel has updated its Architecture Instruction Set Extensions Programming Reference (Revision 063) to include details for the upcoming Razor Lake and Coral Rapids processor families. The update provides specific model values for Razor Lake desktop and laptop variants under family 18 (12H), as well as a new model ID for the Coral Rapids Xeon family.

Beyond identification, the documentation introduces several technical features, including new speculative memory controls for Razor Lake and quantum-resistant digital signature support for Coral Rapids. These updates serve as a critical resource for software developers and compiler engineers preparing for these architectures, which are expected to arrive around 2028.

Technical specifications and instruction updates

• Razor Lake Architecture: Identified under family 18 (12H) with desktop model IDs 12_06H and 12_0AH, and laptop model IDs 12_07H and 12_09H; it is expected to support AVX10.2 and APX.
• Coral Rapids Xeon: Assigned model ID 13_08H, following the Diamond Rapids family, and will utilize the AVX10.2 instruction set.
• Security and Virtualization: Razor Lake introduces SSBD_PSFD_U_S for granular user-mode and supervisor-mode control over speculative memory behavior, while both families gain APIC-Timer Virtualization for improved VM performance.
• Post-Quantum Cryptography: Coral Rapids includes the VPMLDSABFLYDQ instruction, specifically designed to support the ML-DSA quantum-resistant digital signature standard.

Why it matters

These updates allow compiler developers and kernel maintainers to begin planning for upcoming hardware features like AVX10.2 and improved virtualization. The inclusion of ML-DSA support in Coral Rapids highlights the industry shift toward hardware-accelerated post-quantum cryptography in data center environments.