Ampere Altra Max M128-26 128-Core 2.6 GHz LGA 4926 Server Processor AC-212819002

Cloud-native 128-core server processor

The Ampere Altra Max M128-26 is a 128-core, 128-thread processor built on TSMC 7 nm FinFET technology for cloud-native workloads. It operates at a consistent 2.6 GHz frequency across all single-threaded cores without turbo fluctuations. The LGA 4926 socket supports 8-channel 72-bit DDR4-3200 memory with ECC for up to 4 TB total capacity. It delivers 128 lanes of PCIe 4.0 connectivity with optional 64-lane CCIX for multi-socket scaling.

Sustained 133 W performance profile

Under continuous load the processor maintains its 2.6 GHz clock speed at an average power draw of 133 W, avoiding the frequency drops common in burst-oriented designs. Each core provides 1 MB of L2 cache and 64 KB of L1 instruction and data cache, giving predictable latency for parallel tasks. The 16 MB system-level cache is shared across the 128 cores, supporting throughput for containerised and micro-service deployments. Dynamic power management and voltage-droop detection help keep output steady during extended runs.

Upgrade from lower-core Altra or Altra Max SKUs

This model replaces 32-core, 64-core, 80-core or 96-core variants when workloads need the full 128 cores and 128 PCIe 4.0 lanes in a single socket. The jump is worthwhile for hyperscale and enterprise environments that require maximum thread density and memory bandwidth without adding a second processor. Buyers who need fewer cores or less I/O bandwidth can select a smaller Altra or Altra Max SKU instead.