MacBook Air 15″ (2024) · M3 · 8 GB / 256 GB
CPU index
137
×1.37 vs M1
GPU index
164
×1.64 vs M1
Memory
8
GB unified
Storage
256
256 GB
Bandwidth
100
GB/s
This MacBook Air 15″ configuration uses the M3 (8-CPU/10-GPU) with 8 GB unified memory and 256 GB storage. On MacDiff its CPU index is 137 (×1.37 vs the entry-level M1 Air) and its GPU index is 164 (×1.64). 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 2024. Apple date: 2024-03-08. 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 | Bandwidth | Storage | From | |
|---|---|---|---|---|---|---|---|---|
| M3 (8-CPU/10-GPU)this page | 137 | 164 | 8 GB | 100 GB/s | 256 GB | $1499 | Compare |
Specifications
Apple published figures for this configuration. Not MacDiff scores.
Chassis
- Weight
- 1.51 kg
- Size
- 340.4 × 237.6 × 11.5 mm
Ports
- Thunderbolt
- 2× Thunderbolt 3
- USB-C (not Thunderbolt)
- None
- USB-A
- None
- HDMI
- None
- MagSafe
- MagSafe 3
- Headphone jack
- 3.5 mm, high-impedance
- SD card
- None
- Ethernet
- None
- Charging
- MagSafe 3 and Thunderbolt
Display
- Panel
- 15.3-inch Liquid Retina display
- Resolution
- 2880x1864
- Density
- 224 ppi
- SDR brightness
- 500 nits
- Color
- P3
- True Tone
- Yes
- Nano-texture
- No
- External displays
- 2 — One external display with up to 6K resolution at 60Hz; close the lid for a second external display up to 5K at 60Hz
Camera
- Camera
- 1080p FaceTime HD
- Center Stage
- No
- Desk View
- No
Audio
- Speakers
- 6
- Microphones
- 3
- Spatial Audio
- Yes
- Dolby Atmos
- Yes
- Audio
- Six-speaker sound system with force-cancelling woofers. Spatial Audio with Dolby Atmos. Three-mic array with directional beamforming.
Wireless
- Wi-Fi
- Wi-Fi 6E (802.11ax)
- Bluetooth
- 5.3
Keyboard and trackpad
- Backlit keyboard
- Yes
- Touch ID
- Yes
- Touch Bar
- No
- Force Touch trackpad
- Yes
Battery and power
- Battery
- 66.5 Wh
- Video playback
- Up to 18 hours (Apple)
- Wireless web
- Up to 15 hours (Apple)
- Fast charge
- Yes
- Charge cable
- USB-C to MagSafe 3 Cable (2 m)
- Power adapter
- 35W
Chip
- CPU layout
- 4 performance + 4 efficiency
- Neural Engine
- 16-core
- Media engine
- Hardware-accelerated H.264, HEVC, ProRes, and ProRes RAW; video decode engine; video encode engine; ProRes encode and decode engine; AV1 decode
- Neural Engine index
- 226
- Media engine index
- 117
- Hardware ray tracing
- Yes
- Memory bandwidth
- 100 GB/s
In the box
- macOS at launch
- macOS Sonoma
- Cable
- USB-C to MagSafe 3 Cable (2 m)
Notes
Base RAM raised from 8GB to 16GB on 2024-10-30; options list covers the full sales history.
Related in MacBook Air
FAQ — MacBook Air 15″ on MacDiff
What is the CPU index of this MacBook Air 15″?
This configuration (M3 (8-CPU/10-GPU)) has a CPU index of 137, about ×1.37 the MacBook Air M1 baseline of 100 on MacDiff.
What is the GPU index?
GPU index 164 (≈ ×1.64 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 ×1.37 CPU and ×1.64 GPU for the selected memory/storage config. Use Compare to stack it against other Macs.