Specifications
Core Count
132 active Arm Neoverse V3 cores per SoC
Compute Platform
Arm Neoverse Compute Subsystem V3 (CSS V3)
Chiplet Design
Two chiplets of 66 cores each, joined by a custom high-bandwidth interconnect
L2 Cache
3 MB per core
L3 System Cache
192 MB shared
Process Node
TSMC 3 nm
Power Management
Per-core Dynamic Voltage and Frequency Scaling — each of the 132 cores runs at its own performance level
Performance vs Cobalt 100
Up to 50% better performance
Memory Controllers
Six memory controllers with six DDR PHY channels
Memory Encryption
Custom memory controller with always-on encryption using Arm Confidential Compute Architecture (CCA)
Confidential Compute
Hardware-based VM isolation
Security
Custom cryptography accelerator with negligible performance impact
Software Compatibility
Full compatibility with workloads already running on Azure Cobalt CPUs
Availability
First production systems live in Microsoft datacentres; broader rollout and customer availability in 2026
Sibling Accelerator
Microsoft Maia 200 AI accelerator, already in production alongside Cobalt 200
Overview
Azure Cobalt 200 is Microsoft's second-generation custom Arm server processor and the most advanced compute silicon in Azure. It is built on Arm's Neoverse CSS V3 platform and fabricated on TSMC's 3 nm process, with two chiplets of 66 Neoverse V3 cores each — 132 active cores per SoC — linked by a custom high-bandwidth interconnect.
The headline architectural feature is genuine per-core Dynamic Voltage and Frequency Scaling. Every one of the 132 cores can run at a different performance level, which lets Azure match power draw to the actual shape of a workload instead of running a whole socket at a compromise frequency. Microsoft quotes up to 50% better performance than Cobalt 100 along with integration into its latest security, networking and storage silicon.
Security is handled in the memory controller itself: always-on encryption built on Arm's Confidential Compute Architecture, hardware-based VM isolation for confidential compute, and a custom cryptography accelerator that adds security without a meaningful throughput penalty. Cobalt 200 cores with 3 MB of L2 each and 192 MB of shared L3 are sized for data-heavy cloud-native services and the control-plane work behind large-scale AI deployments. QS Compute supplies Arm server platforms, DPU-equipped systems and AI infrastructure — get in touch for a quote.
Key Benefits
Per-core DVFS: 132 independently clocked cores for the best power/performance fit. Large cache pool: 3 MB L2 per core plus 192 MB shared L3. Security by design: always-on memory encryption and hardware VM isolation. Drop-in compatibility: runs existing Azure Cobalt workloads unchanged.
Applications
Cloud-native services and microservices, data-heavy databases and analytics, confidential computing and regulated workloads, AI inference control planes, container orchestration, and general-purpose Arm cloud capacity.
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