---
title: "Mac Studio (M5 Ultra) with 256 GB of RAM review: a dream machine to run local AI agents and a massive leap over M3 Ultra for prompt processing and generation (Federico Viticci/MacStories)"
type: signal
url: https://frontiernewswire.com/s/mac-studio-m5-ultra-with-256-gb-of-ram-review-a-dream-machine-to-run-8eee99f9
published: 2026-09-21T15:40:01.000Z
byline: "Source: TECHMEME"
---

# Mac Studio (M5 Ultra) with 256 GB of RAM review: a dream machine to run local AI agents and a massive leap over M3 Ultra for prompt processing and generation (Federico Viticci/MacStories)

Source: TECHMEME · Published 2026-09-21 · Canonical: https://frontiernewswire.com/s/mac-studio-m5-ultra-with-256-gb-of-ram-review-a-dream-machine-to-run-8eee99f9

Federico Viticci / MacStories : Mac Studio (M5 Ultra) with 256 GB of RAM review: a dream machine to run local AI agents and a massive leap over M3 Ultra for prompt processing and generation — For the past few days, I've been testing the (currently) top-of-the-line M5 Ultra Mac Studio with 256 GB of RAM.

In this story: [Mac Studio](https://frontiernewswire.com/models/mac-studio)

## Sources

- [Read the original at TECHMEME](https://www.techmeme.com/260921/p39#a260921p39)

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