In order for you to play Call of Duty: Modern Warfare 2 on macOS with minimal graphics settings, your computer must meet the following requirements
Operating System:
10.12 (Sierra)
CPU Processor:
Intel i3 (Dual-Core)
CPU Speed:
2.2GHz
Memory (RAM):
4 GB RAM
Hard Disk Space:
13 GB
Video Card (ATI):
Radeon HD 4850
Video Card (NVidia):
Geforce 640M
Video Card (Intel):
Iris
Video Memory (VRam):
512 MB
Peripherals:
Macintosh mouse and keyboard
IMPORTANT NOTICE:
Currently, MW2 for Mac may not be accessible to users in Russia, Poland, and Japan
NOTICE:
The following video chipsets are unsupported for Call of Duty®: Modern Warfare® 2:
•ATI RADEON HD 2000 Series
•ATI RADEON HD 6490M, 6630M, 3870
•NVIDIA 9000 Series
•NVIDIA 320M, 330M
•Intel HD 3000, 4000, 5000
NOTICE:
This game is not supported on volumes formatted as Mac OS Extended (Case Sensitive)