Apple Mac Studio M5 Ultra Turns the Desktop Mac Into a Local AI Workstation

As of Thursday, September 24, 2026, the new Mac Studio with M5 Ultra is no longer just an announcement; Apple listed availability beginning September 22, after pre-orders opened on August 25. The idea is familiar, but the emphasis has shifted: this is still the small silver desktop that sits neatly under a display, yet Apple is positioning it more clearly as a workstation for on-device AI, high-end creative work, and demanding development pipelines. The M5 Ultra model measures 7.7 x 7.7 x 3.7 inches and weighs 8.0 pounds, so the pitch is not tower-style expandability. It is workstation-class Apple silicon in a box that can live on a desk without taking over the room. (apple.com)

The M5 Ultra starts with a 30-core CPU with 10 super cores and 20 performance cores, a 64-core GPU, Neural Accelerators, hardware-accelerated ray tracing, a 32-core Neural Engine, and 1.2TB/s memory bandwidth. It can be configured up to a 36-core CPU and 80-core GPU, while memory options include 96GB unified memory on the base M5 Ultra configuration and configurable 256GB or 512GB unified memory on the higher M5 Ultra chip. Storage options for the Ultra line go up to 16TB SSD. The media engine supports hardware-accelerated H.264, HEVC, ProRes, and ProRes RAW, with two video decode engines, four video encode engines, four ProRes encode/decode engines, and AV1 decode. (apple.com)

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The local-AI angle matters because Apple’s unified memory design lets the CPU, GPU, and Neural Engine access a large shared pool instead of relying on separate graphics memory. For users running large language models, image-generation tools, AI-assisted coding workflows, or research notebooks locally, the headline is not only raw compute; it is also the option to keep work on the machine rather than sending every prompt or dataset to a cloud service. Apple says M5 Ultra can scale to 512GB of unified memory and is aimed at running enormous LLMs on device, though the 512GB memory configuration is listed as coming in late October, not immediately available on September 24. Independent coverage has also framed the machine as a strong local AI system, with Tom’s Hardware calling attention to the M5 Ultra’s neural accelerators and high memory bandwidth in its testing. (apple.com)

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The M5 Ultra version is also the better-connected Mac Studio. On the back, it has four Thunderbolt 5 USB-C ports, two USB-A ports, HDMI 2.1, 10Gb Ethernet, and a 3.5 mm headphone jack. On the front, the M5 Ultra swaps the regular USB-C ports found on the M5 Max version for two more Thunderbolt 5 ports, giving it six Thunderbolt 5 ports in total, plus an SDXC card slot. Thunderbolt 5 supports up to 120Gb/s, and the system also includes Apple’s N1 wireless chip with Wi-Fi 7, Bluetooth 6, and Thread networking technology. For display-heavy setups, the M5 Ultra model supports up to eight external displays, including up to eight 6K displays at 60Hz or up to four 8K displays at 60Hz. (apple.com)

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The practical catch is price and upgradeability. Apple lists the Mac Studio with M5 Ultra from $5,499 in the U.S., while Tom’s Guide tested a configuration valued at $12,299 with 256GB unified memory and a 4TB SSD. That puts it well beyond a general desktop purchase and closer to a machine for editors, 3D artists, developers, researchers, and studios that can use the performance every day. It is also important to buy the configuration carefully, because unified memory and internal SSD capacity are not user-upgradeable later in the way traditional workstation RAM or storage often can be. For the right workload, the M5 Ultra Mac Studio makes the desktop Mac feel like a local AI workstation again; for lighter users, it is more machine than they need. (apple.com)

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