MacBook Air M1 launched November 2020 — 5+ years ago in 2026. MacBook Air M4 launched 2025. Three generations of Apple Silicon between them. The upgrade case for M1 owners is substantial but not as clear-cut as iPhone upgrades.
TL;DR
Strong upgrade case if: M1 battery degraded, you do creative work, you've maxed RAM/storage limits, you want hardware ray tracing for ML
Hold M1 if: Working well for browsing, documents, video calls. Apple Silicon M1 still feels modern in 2026.
Key insight: M1 MacBook Airs remain remarkably capable 5+ years later. Few laptops have aged as gracefully as M1.
What Changed: M1 → M4
CPU Performance
M1: 8-core CPU (4 performance + 4 efficiency)
M4: 10-core CPU (4 performance + 6 efficiency)
Real-world impact:
40-50% faster single-core performance
50-60% faster multi-core performance
Compilation, video rendering, large file operations all noticeably faster
Light tasks (web browsing, office) feel identical
GPU Performance
M1: 7-core or 8-core GPU
M4: 8-core or 10-core GPU with hardware ray tracing
Real-world impact:
2x faster GPU performance
Hardware ray tracing for ML and graphics work
4K video editing more capable
Gaming performance significantly better (though Mac gaming still limited)
Neural Engine for AI
M1: 16-core Neural Engine
M4: 16-core Neural Engine (3x faster)
Real-world impact:
Apple Intelligence features work much faster
Local LLM (Llama, Mistral) inference 3x faster
ML developer workflows benefit significantly
Most users won't notice in daily use
Memory
M1: 8GB or 16GB unified memory (max)
M4: 16GB, 24GB, or 32GB unified memory
Critical change: M1 maxed at 16GB; M4 supports 32GB. For users hitting M1 memory limits:
Video editors with 4K+ projects
Developers running Docker + IDE + browser
ML practitioners with larger models
M4 with 32GB unified memory is a different class of machine.
Storage Bandwidth
M1: SSD bandwidth ~3,500 MB/s
M4: SSD bandwidth ~3,500 MB/s (similar)
Caveat: Apple has been criticized for slower base storage on some M2/M3 models. M4 base configurations have similar SSD speeds to M1.
For users wanting fastest storage: configure to 1TB+ storage which uses 2 NAND chips for better speed.
Battery Life
M1 MacBook Air: ~18 hours web browsing (when new)
M4 MacBook Air: ~18 hours web browsing
Important reality: After 5 years, M1 battery may be at 80-85% capacity. M4 with new battery delivers significantly longer real-world use than degraded M1.
[Best Laptops Under $1,500 in 2026](/blog/best-laptops-under-1500-2026) — Alternatives
The Bottom Line
MacBook Air M1 to M4 is a substantial upgrade — 3 generations of Apple Silicon improvements deliver measurable performance gains. However, M1 has aged remarkably well; most users find their M1 MacBook Airs remain capable for daily work.
Upgrade if: you've hit memory limits, battery degraded significantly, or you do creative/development work. Hold if: M1 works well for your typical use. Battery service for $129 extends M1 useful life 2-3 years for users not needing performance gains.
For value-focused buyers: refurbished MacBook Air M2 splits the difference — meaningful upgrade at half the M4 price.
Häufig gestellte Fragen
Is MacBook Air M1 still good in 2026?
Yes for most users. M1 has aged remarkably well — web browsing, office work, video calls, light development all work great. M1 limitations show in: 4K video editing (with 8GB), heavy multitasking, ML/AI workflows. For typical knowledge worker use, M1 MacBook Air remains capable.
How long does MacBook Air battery last?
18-hour Apple-rated battery typical when new. After 3-4 years, battery health drops to 80%, giving ~12-14 hours real-world use. After 5 years, 75-80% health = 10-12 hours real-world. Apple battery service ($129) restores to full capacity. Most users find M1 batteries still functional 5+ years later.
Should I upgrade my MacBook Air M1?
Strong upgrade case if: battery degraded, you do creative work, RAM-constrained workflows. Hold if: works well for browsing/documents/email, you have 16GB M1, budget matters. M2 refurbished ($700-900) is the value sweet spot. Most M1 users in 2026 don't urgently need to upgrade.
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