RAM Upgrade
MacBook Air (15-inch, M4, 2025) Max RAM & Upgrade
The short answer
The maximum supported RAM for the MacBook Air (15-inch, M4, 2025) is 32 GB. No — the MacBook Air (15-inch, M4, 2025)'s Unified Memory (LPDDR5) is soldered to the motherboard and cannot be upgraded.
Last verified 8/18/2026 · Sources: Apple
Specifications
- Memory type
- Unified Memory (LPDDR5)
- Form factor
- soldered
- Total slots
- 0
- User-accessible slots
- 0
- Soldered memory
- 16 GB
- Maximum supported
- 32 GB
What to buy
The memory cannot be changed after purchase, so choose the size when you buy: the manufacturer documents up to 32 GB for this model.
Details
This model ships with 16 GB of Unified Memory (LPDDR5) soldered directly to the motherboard, with no user-accessible slot.
Worth knowing before you buy
- This is the manufacturer-documented maximum — some platforms have been community-tested beyond the officially configured maximum, but that isn't treated as verified here.
Also upgrading storage?
Frequently asked questions
Can you upgrade the RAM in the MacBook Air (15-inch, M4, 2025)?
The maximum supported RAM for the MacBook Air (15-inch, M4, 2025) is 32 GB. No — the MacBook Air (15-inch, M4, 2025)'s Unified Memory (LPDDR5) is soldered to the motherboard and cannot be upgraded.
How much RAM does the MacBook Air (15-inch, M4, 2025) support?
This model ships with 16 GB of Unified Memory (LPDDR5) soldered directly to the motherboard, with no user-accessible slot.
Sources
- Apple — MacBook Air (15-inch, M4, 2025) - Tech Specs — verified 8/18/2026
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