Apple M1 Ultra (64-core GPU, Mac Studio, 128GB)

Compare Apple M1 Ultra (64-core GPU, Mac Studio, 128GB) against another machine in the Arena

Class: Mac
Memory: 128 GB LPDDR5
Runs (Q4_K_M): —
Bandwidth: 800 GB/s
Released: 2022-03-18

Sourcing and disambiguation notes

Apple states 800GB/s for the M1 Ultra on the Mac Studio tech-spec page, under the 48-core GPU entry, and the launch announcement repeats the figure for the chip as a whole -- so both GPU bins share it, the same pattern as the M4 Pro. Discontinued in 2023 and only available used; no sold listing for this exact 64-core/128GB configuration could be confirmed at a source that publishes completed prices, so the price is left empty rather than carried over from a 48-core or 64GB machine.

Specification sources

https://support.apple.com/en-us/111900 — vendor, 2026-08-23
https://www.apple.com/newsroom/2022/03/apple-unveils-m1-ultra-the-worlds-most-powerful-chip-for-a-personal-computer/ — vendor, 2022-03-08

Measurements

Decode is token generation — the speed you feel while an answer streams. Prefill is prompt processing — the wait before it starts. Why bandwidth predicts decode speed.

What verified, single-source and estimated mean, and the same rows with every filter and sort in the benchmarks explorer.

Speed over time

What it can run

Fit is arithmetic, not a measurement — how it is computed. Against 128 GB; models that fit are listed largest first.