In order for you to play Factorio on macOS with minimal graphics settings, your computer must meet the following requirements
Operating System:
macOS Catalina, Mojave, High Sierra, Sierra, OSX El Capitan, Yosemite
Processor (CPU):
Dual core 3Ghz+
Memory (RAM):
4 GB RAM
Graphics Card:
2012 Mac
Storage:
3 GB available space
In order to play Factorio on macOS with maximum graphics settings, you need a computer with a configuration no worse than the following
Operating System:
macOS Catalina, Mojave, High Sierra, Sierra, OSX El Capitan, Yosemite
Processor (CPU):
Quad core 3GHz+
Memory (RAM):
8 GB RAM
Graphics Card:
2015 Mac with dedicated GPU with 2 GB VRAM.
Storage:
3 GB available space