Intel Unveils 288-Core Clearwater Forest Xeon
According to a report from TechPowerUp, Intel showcased its next-generation Xeon 6+ server processor, code-named Clearwater Forest, at MWC 2026 in Barcelona, Spain. Built on the Intel 18A process node, the new chip is scheduled for commercial launch in 2026 and represents one of the most advanced server platforms Intel has publicly demonstrated to date.
Rather than simply increasing core counts, Clearwater Forest adopts a highly modular chiplet architecture. The full package integrates 12 compute tiles manufactured on Intel 18A, three active base tiles built on Intel 3, and two I/O tiles using Intel 7. These dies are stacked using Foveros Direct 3D technology and interconnected through EMIB bridges, forming a hybrid 2.5D and 3D packaging design. For electronic components professionals, this mixed packaging strategy highlights Intel's continued push into advanced heterogeneous integration, balancing performance density with yield and scalability.
At the CPU architecture level, each compute tile contains six modules, and each module integrates four Darkmont E-cores. That results in 24 cores per compute tile and a total of 288 CPU cores in a single Clearwater Forest processor. In dual-socket server configurations, total core counts can scale up to 576 cores, positioning the platform for extremely high thread-density workloads in cloud and telecom environments.
Intel stated that the new Darkmont E-core microarchitecture brings systematic enhancements across front-end bandwidth, out-of-order execution depth, and compute resource density. A wider instruction fetch and decode front end, combined with a larger out-of-order window, improves instruction-level parallelism and scheduling efficiency. Additional execution ports and expanded integer and vector units further increase throughput under complex, mixed workloads, particularly those combining control-plane processing with AI inference.
Cache architecture has also been significantly upgraded. Four CPU cores form a cluster sharing approximately 4 MB of L2 cache. At the package level, the last-level cache capacity exceeds 1 GB, reaching about 1,152 MB. Such a large LLC dramatically improves inter-core data sharing efficiency and reduces external memory access latency, which is critical for multi-core scaling and data-intensive applications.
On the platform side, Clearwater Forest maintains compatibility with existing Xeon server sockets, supports 12-channel DDR5 memory with a target speed of DDR5-8000, and provides 96 lanes of PCIe 5.0 alongside 64 lanes of CXL 2.0. This configuration ensures ample bandwidth for high-speed storage, accelerators, and memory expansion devices, aligning with next-generation data center infrastructure requirements.
Intel also emphasized the growing convergence of 6G network architectures, where virtualization and cloud-native deployment models are driving telecom operators to consolidate vRAN functions and AI inference workloads onto a single server processor. By integrating matrix and vector extensions, vRAN offload capabilities, and both control-plane and user-plane processing within one SoC, Clearwater Forest reduces reliance on discrete accelerator cards and simplifies system design. In theory, a dual-socket system could host dozens or even hundreds of virtual machines within a defined power envelope, significantly increasing workload density per rack while maintaining energy efficiency targets.
