In order for you to play BioShock Infinite on macOS with minimal graphics settings, your computer must meet the following requirements
Operating System:
10.12 (Sierra)
Processor (CPU):
2.2 GHz Intel Core 2 Duo (Dual-Core)
Memory (RAM):
4 GB RAM
Hard Disk Space:
30 GB
Video Memory:
512 MB
Video Card:
ATI Radeon HD 3870 / NVidia Geforce 640M / Intel HD4000
Additional:
BioShock Infinite supports both the Microsoft Xbox 360 wired gamepad and the PlayStation 3 Dualshock 3 Wireless Controller in addition to the Macintosh mouse and keyboard
NOTICE:
This game is not supported on volumes formatted as Mac OS Extended (Case Sensitive)
NOTICE:
The following video chipsets are unsupported for BioShock Infinite: ATI RADEON 2000 series, HD 4670, HD 6490M and 6630M, NVIDIA 9000 series, 320M, 330M, Intel HD 3000, Intel Integrated GMA chipsets and 3100
NOTICE:
The Mac version of Bioshock Infinite is available in English, French, Italian, German and Spanish only.
In order to play BioShock Infinite on macOS with maximum graphics settings, you need a computer with a configuration no worse than the following
Operating System:
10.12 (Sierra)
Processor (CPU):
2.2 GHz Intel Core 2 Duo (Dual-Core)
Memory (RAM):
4 GB RAM
Hard Disk Space:
30 GB
Video Memory:
512 MB
Video Card:
ATI Radeon HD 5870 / NVidia Geforce GTX 775M