AWS has fully launched Graviton5 – a 3nm Arm CPU with 192 cores – powering new EC2 M9g and M9gd instances. Built for agentic AI workloads (high concurrency, low latency), Graviton5 uses four‑chiplet architecture (48 cores per chiplet), 192 MB L3 cache (5x Graviton4), and Neoverse V3 cores designed with Arm and AWS Annapurna Labs.

It is the first cloud CPU to support both DDR5‑8800 and PCIe Gen 6. Chiplet interconnect bandwidth reaches 420 GB/s. A lidless die design lowers fan power by 33%.

Compared to M8g, M9g instances deliver: 25% better general‑compute, 35% faster web apps, 35% higher ML inference, and 30% faster database workloads. Real‑world tests: ClickHouse +36% (no code change), Honeycomb +36% per‑core throughput, HubSpot MySQL query latency reduced up to 60%. Meta will deploy millions of Graviton5 cores for agentic AI.

The M9gd variant includes up to 11.4 TB NVMe SSD (30% higher IOPS). Top instance bandwidth: 100 Gbps network, 72 Gbps EBS. Graviton5 introduces the Nitro Isolation Engine – the world’s first formally verified cloud hypervisor – for strong virtual‑machine isolation.

ICgoodFind: Graviton5’s 3nm 192‑core design and DDR5/PCIe Gen6 leadership push Arm deeper into the cloud CPU mainstream, challenging x86 dominance.