Apple M4 Ultra: 32-Core Neural Engine Redefines On-Device AI

Desktop AI Goes Native

Apple has unveiled the M4 Ultra, its most powerful chip ever, featuring a 32-core Neural Engine capable of 80 trillion operations per second (TOPS). The chip redefines what's possible for on-device AI, running large language models locally that previously required cloud infrastructure.

Architecture Breakthrough

Built on TSMC's 2nm process, the M4 Ultra integrates a 32-core CPU, 80-core GPU, and the 32-core Neural Engine on a single package connected via UltraFusion 2.0 interconnect. The unified memory architecture supports up to 256GB of LPDDR6 RAM with 1.2TB/s bandwidth — enough to run GPT-5 class models entirely on-device.

Real-World Performance

In benchmarks, the M4 Ultra outperforms NVIDIA's RTX 5090 on specific inference workloads while consuming 60% less power. For developers, this means LLM inference at 150+ tokens per second locally, enabling real-time AI applications in creative tools, coding assistants, and scientific computing.

Availability

The M4 Ultra will debut in the Mac Studio and Mac Pro lineup in Q4 2026, with developer kits shipping in August.