Intel Diamond Rapids Server CPU Leak: 256-Core P-Core Flagship, E-Core Variants Dropped, 2027 Launch to Rival

Fresh details have emerged on Intel's flagship server processor, codenamed Diamond Rapids. The series' top model will feature 256 high-performance cores (P-Cores), while previously rumored ultra-dense efficiency-core (E-Core) variants with 384 and 512 cores have been canceled during the definition phase. The platform underwent significant scaling back in late 2025, and Intel has since shifted focus to a pure P-Core architecture.

According to Intel's official specifications, Diamond Rapids offers a 50% increase in core count over its predecessor Granite Rapids, which maxes out at 128 cores, enabling support for up to 192 P-Cores. Additionally, Intel is preparing an unannounced top-tier 256-core SKU. If mass-produced, this version would match the 256-core specification of AMD's sixth-generation EPYC Venice flagship chip (EPYC 9996).

As Intel's Oak Stream platform advances, Diamond Rapids chips will incorporate cores based on the Panther Cove-X architecture, supporting up to 16 channels of DDR5-9000+ memory and the PCIe 6.0 expansion standard. The platform is scheduled for a 2027 launch, positioning it to compete directly with AMD's EPYC Venice lineup.