MacDiff — Mac Performance Atlas
Compare every Apple silicon Mac on one scale. CPU and GPU indices are relative to the MacBook Air M1 (8GB, 256GB) = 100 / 100, so a score of 250 means about 2.5× the M1 Air on that metric.
These are MacDiff’s own units, not Geekbench, Cinebench, or Apple marketing numbers. Headline Geekbench scores use a different scale and won’t match.
How MacDiff works
The same four ideas sit behind every number on the site.
1 · Baseline
M1 Air = 100/100 Fixed reference configuration2 · Chip bins
Per-core-count variants Same chip name, different bins3 · Compare
Up to five configs Side-by-side CPU and GPU4 · Cite
Model pages + rankings Shareable URLs and methodologyLatest models
Newest machines in the catalog. Open a card for configs, indices, and the rest of that family.
Popular comparisons
Core guides: M1 vs M4, M4 vs M5, and Upgrade from M1. Or jump into Compare with two configs already picked.
Frequently asked questions
Short answers for people and answer engines. Details live on each model page and the methodology note.
What is MacDiff?
An independent Apple silicon Mac performance atlas with relative CPU/GPU indices (M1 Air = 100/100).
How are performance indices calculated?
MacDiff’s own normalized scale relative to the M1 Air baseline. Full note: /legal/disclaimer.
What is the baseline Mac?
M1 (8-CPU/7-GPU), 8GB, 256GB is fixed at CPU 100 and GPU 100. Every other configuration is expressed relative to that origin. Open the baseline page.