ARM AGI CPU: Specs and SKUs
ARM, a company primarily known for licensing CPU designs, has officially unveiled its first production silicon: the ARM AGI CPU. Engineered specifically for large-scale AI infrastructure, this new chip promises high performance and extreme density in modern data centers. Its detailed specifications and various SKUs mark ARM's direct entry into the competitive AI hardware market, making it a compelling read for HN's technically-minded audience.
The Lowdown
ARM has announced its first production silicon, the ARM AGI CPU, designed specifically for AI infrastructure at scale. Unveiled at the Arm Everywhere Keynote on March 24, 2026, this CPU aims to deliver a new class of performance and rack-level density crucial for agentic AI operations within data centers. While ARM typically licenses its designs, this direct silicon offering signals a significant strategic move into the high-growth AI hardware market.
- Core Configuration: Features up to 136 Neoverse V3 cores (2x 128 SVE, 2MB/core L2 cache).
- Architecture & AI Support: Based on Armv9.2, including bfloat16 and INT8 AI instructions for accelerated AI workloads.
- Performance: Boost clock speeds reach up to 3.7GHz.
- Connectivity: Equipped with 96 Lanes of PCIe Gen6 and CXL 3.0 Type 3 for high-speed I/O and memory expansion.
- Manufacturing Process: Fabricated using a 3nm lithography process.
- Power & Memory: Boasts a TDP of up to 420W and supports up to 6 Terabytes of DDR5-8800 memory across 12 channels.
- Design: Utilizes a dual-chiplet architecture for enhanced scalability and performance.
Available SKUs:
- SP113012: The flagship 136-core model designed for maximum core count.
- SP113012S: A 128-core variant optimized for Total Cost of Ownership (TCO).
- SP113012A: A 64-core model specifically optimized for maximum memory bandwidth per core.
Server Configurations:
- ARM's reference design is a 10U, 2-node system, with two chips per blade, totaling 272 cores. A standard air-cooled 36kW rack can accommodate 30 such blades, yielding 8160 cores.
- In partnership with Supermicro, a liquid-cooled 200kW design can house 336 ARM AGI CPUs, pushing core counts over 45,000.
The ARM AGI CPU represents a bold step for ARM into directly providing silicon for the demanding AI infrastructure sector, showcasing their commitment to delivering high-performance, high-density solutions tailored for the future of AI.