For most M3 MacBook Air owners, upgrading to the M4 is not worth the cost. The improvements are real but incremental rather than transformative.
What the M4 Improves
Performance: Approximately 20-25% faster in single-core, multi-core, and GPU benchmarks.
Key feature additions:
- 10-core CPU versus 8-core in M3
- Dual external display support with lid open (M3 required closed lid)
- 12MP Center Stage camera versus 1080p
- 32GB RAM option (M3 maxed at 24GB)
Better baseline: $100 lower starting price with 16GB base RAM versus 8GB in M3.
Real-World Impact
For typical productivity tasks, the difference between M3 and M4 is essentially imperceptible. Web browsing, documents, and email feel identical. Photo editing gains measured in seconds. Video exports improve modestly.
When Upgrading Makes Sense
Consider the M4 if:
- Your M3 has only 8GB RAM and you experience memory pressure
- Dual external displays with the lid open is essential for your workflow
- The improved camera significantly benefits your video calls
- You can sell the M3 and upgrade at minimal net cost
When to Skip the Upgrade
Stay with your M3 if:
- Your current configuration has adequate RAM
- Your setup works well for your needs
- You do not require dual displays with the laptop open
The Better Long-Term Strategy
If your M3 performs well, waiting for M5 or M6 makes more sense. The M3 will remain capable for years. Upgrading for 20% performance improvements rarely justifies the cost and migration effort.
For New Purchases
When choosing between a discounted M3 and the M4 at similar prices, the M4 is the better long-term investment. The baseline improvements in RAM and display support make it a smarter purchase.
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How we researched this
Where this comes from: this answer draws on the product's published specifications and the reviews ShopSavvy collected for it, alongside prices from ShopSavvy's price data.
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