iMac 24″ (2024) · M4 · 16 GB / 256 GB
CPU index
149
×1.49 vs M1
GPU index
151
×1.51 vs M1
Memory
16
GB unified
Storage
256
256 GB
Bandwidth
120
GB/s
This iMac 24″ configuration uses the M4 (8-CPU/8-GPU) with 16 GB unified memory and 256 GB storage. On MacDiff its CPU index is 149 (×1.49 vs the entry-level M1 Air) and its GPU index is 151 (×1.51). The origin of the scale is the 2020 MacBook Air M1 at 100/100 — MacDiff’s own relative units, not Geekbench or Apple scores.
MacDiff lists 2 configurations of the iMac 24″. CPU indices on this model run 149–167 and GPU indices run 151–192. This page is the entry config listed for this model.
Family: iMac. Released 2024. Apple date: 2024-11-08. 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 | |
|---|---|---|---|---|---|---|---|---|
| M4 (10-CPU/10-GPU) | 167 | 192 | 16 GB | 120 GB/s | 256 GB | $1499 | Compare | |
| M4 (8-CPU/8-GPU)this page | 149 | 151 | 16 GB | 120 GB/s | 256 GB | $1299 | Compare |
Specifications
Apple published figures for this configuration. Not MacDiff scores.
Chassis
- Weight
- 4.42 kg
- Size
- 546.1 × 147.3 × 459.7 mm
Ports
- Thunderbolt
- 2× Thunderbolt 4
- USB-C (not Thunderbolt)
- None
- USB-A
- None
- HDMI
- None
- MagSafe
- None
- Headphone jack
- 3.5 mm, high-impedance
- SD card
- None
- Ethernet
- 1Gb (option)
- Rear
- 2 Thunderbolt/USB 4
Display
- Panel
- 24-inch 4.5K Retina display
- Resolution
- 4480x2520
- Density
- 218 ppi
- SDR brightness
- 500 nits
- Color
- P3
- True Tone
- Yes
- Nano-texture
- Optional
- External displays
- 1 — One display up to 6K at 60Hz
Camera
- Camera
- 12MP
- Center Stage
- Yes
- Desk View
- Yes
Audio
- Speakers
- 6
- Microphones
- 3
- Spatial Audio
- Yes
- Dolby Atmos
- Yes
- Audio
- High-fidelity six-speaker system with force-cancelling woofers, 3.5 mm headphone jack with high-impedance support
Wireless
- Wi-Fi
- Wi-Fi 6E (802.11ax)
- Bluetooth
- 5.3
Battery and power
- Power adapter
- 143W
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
- 329
- Media engine index
- 219
- Hardware ray tracing
- Yes
- Memory bandwidth
- 120 GB/s
In the box
- macOS at launch
- macOS
- Keyboard
- Magic Keyboard (two ports); Magic Keyboard with Touch ID (four ports)
- Mouse
- Magic Mouse
- Cable
- Power cord (2 m), USB-C Charge Cable
Related in iMac
FAQ — iMac 24″ on MacDiff
What is the CPU index of this iMac 24″?
This configuration (M4 (8-CPU/8-GPU)) has a CPU index of 149, about ×1.49 the MacBook Air M1 baseline of 100 on MacDiff.
What is the GPU index?
GPU index 151 (≈ ×1.51 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 ×1.49 CPU and ×1.51 GPU for the selected memory/storage config. Use Compare to stack it against other Macs.