Head-to-Head Showdown

Apple Mac Studio (M5 Ultra, 512GB, 2026) vs Apple Mac Studio (M3 Ultra, 512GB, 2025)

Comparing ARM architecture against ARM for local AI inference. Review generation throughput, memory architecture, and runner compatibility.

Select Any Two Systems to Compare Head-to-Head

System A (Left)

System B (Right)

System A

Apple Mac Studio (M5 Ultra, 512GB, 2026)

Apple M5 Ultra (36-core CPU, 80-core GPU with Neural Accelerators)

512 GB MemoryARM~159.2 t/s

System B

Apple M3 Ultra (32-core CPU, 80-core GPU)

512 GB MemoryARM~108.6 t/s

Specification	Apple Mac Studio (M5 Ultra, 512GB, 2026)	Apple Mac Studio (M3 Ultra, 512GB, 2025)
Architecture	ARM	ARM
Processor	Apple M5 Ultra (36-core CPU, 80-core GPU with Neural Accelerators)	Apple M3 Ultra (32-core CPU, 80-core GPU)
Operating System	macOS	macOS
System RAM / Unified Memory	512 GB	512 GB
GPU-Usable Memory (VRAM or unified)	384 GB	384 GB
Memory Bandwidth	1200 GB/s	819 GB/s
Memory Type & Bandwidth	Unified Memory (up to 1.2 TB/s)	Unified Memory (819 GB/s)
NPU Acceleration (TOPS)	Not listed	Not listed
Small models (3–7B)	Yes (Compatible)	Yes (Compatible)
8B models (Qwen3 8B)	Yes (Compatible)	Yes (Compatible)
Estimated 8B Generation Speed	~159.2 t/s	~108.6 t/s
Recommended Max Context	128k tokens	128k tokens
Power Consumption Envelope	30-350W	30-270W

The buying and sizing guides that explain the numbers above.