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Apple press release via AIHOT featured · Published 2026-08-25

M6 and M5 Ultra: memory and compute in two desktop Macs

Apple introduced M6 for Mac mini and M5 Ultra for Mac Studio on August 25. Their memory and compute configurations need separate comparison.

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Two chip configurations

Apple lists M6 as a 2nm design with 12 CPU cores, 12 GPU cores, dual 16-core Neural Engines, up to 32GB unified memory and 170GB/s bandwidth.

M5 Ultra uses a four-die UltraFusion design, up to 36 CPU and 80 GPU cores, up to 512GB memory and 1.2TB/s bandwidth. Capacity, bandwidth and core count measure different things.

Two Mac desktop configurations
BitShovel diagram · based on the article’s sources. · Open full-size image
Apple M6 and M5 Ultra chip marks shown side by side
Apple’s release image shows the M6 and M5 Ultra marks, used in the Mac mini and Mac Studio discussed here. Product artwork, not a performance measurement. · Open full-size image

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What the specifications tell us

Capacity affects whether a model and its data fit; bandwidth concerns data movement. Performance also depends on software using the available processors. Apple names frameworks including Metal and Core ML.

These are vendor specifications, not BitShovel token-speed measurements. The earlier claim that they set a two-year performance ceiling was unsupported and has been withdrawn.

Important additions and corrections

Dates below mark changes to our coverage.

  • Correction ·

    Withdrew the unsupported two-year performance ceiling and separated memory capacity, bandwidth and core specifications.

Sources and notes

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Sources and notes

Retained summary and context

Specifications come from Apple’s release; this article has no independent inference measurements or basis for a two-year Mac performance ceiling.

Sources and evidence · 2 links

Each link has a purpose and scope. Link counts do not establish independent confirmation; direct support applies only to the statements specified below.

Source timeline
  1. · Found this reading link via AIHOT featured.
Collection record

First discovered:

Collection and source publication have distinct dates.

Editorial record

Corrected

· Beijing time (UTC+8)

Withdrew the unsupported two-year performance ceiling and separated memory capacity, bandwidth and core specifications. Original publication, discovery and collection dates remain.

Sources and full record

This dates our review of the wording and sources, not a project release or product update.

Full record: before, after and sources (JSON)

Corrections and feedback