MacBook Air 15″ (2025) · M4 · 16 GB / 256 GB
CPU index
167
×1.67 vs M1
GPU index
192
×1.92 vs M1
Memory
16
GB unified
Storage
256
256 GB
Bandwidth
120
GB/s
This MacBook Air 15″ configuration uses the M4 (10-CPU/10-GPU) with 16 GB unified memory and 256 GB storage. On MacDiff its CPU index is 167 (×1.67 vs the entry-level M1 Air) and its GPU index is 192 (×1.92). The origin of the scale is the 2020 MacBook Air M1 at 100/100 — MacDiff’s own relative units, not Geekbench or Apple scores.
This is the only MacBook Air 15″ configuration in the MacDiff catalog right now.
Family: MacBook Air. Released 2025. Apple date: 2025-03-12. Compare it with other Macs on the compare tool, or read how the index is built on the methodology page.
Configurations
| Chip | CPU / GPU | CPU | GPU | Mem | Storage | From | |
|---|---|---|---|---|---|---|---|
| M4 (10-CPU/10-GPU)this page | 167 | 192 | 16 GB | 256 GB | $1299 | Compare |
Specifications
- Weight
- 1.51 kg
- Wi‑Fi
- Wi-Fi 6E (802.11ax)
- Bluetooth
- 5.3
- Display
- 15.3-inch Liquid Retina display
Related in MacBook Air
FAQ — MacBook Air 15″ on MacDiff
What is the CPU index of this MacBook Air 15″?
This configuration (M4 (10-CPU/10-GPU)) has a CPU index of 167, about ×1.67 the MacBook Air M1 baseline of 100 on MacDiff.
What is the GPU index?
GPU index 192 (≈ ×1.92 vs M1). Indices are relative references, not raw Geekbench scores.
How does it compare to the MacBook Air M1?
Relative to the fixed MacDiff baseline (100/100), this page shows roughly ×1.67 CPU and ×1.92 GPU for the selected memory/storage config. Use Compare to stack it against other Macs.