In order for you to play Farming Simulator 2011 on macOS with minimal graphics settings, your computer must meet the following requirements
Operating System:
Mac OS X 10.5.8, 10.6.1
Processor (CPU):
Intel CPU 1.83 GHz
Memory (RAM):
1 GB RAM
Graphics Card:
Nvidia Geforce 8600, Radeon X1600 or better (min. 256 MB VRAM)
Hard Drive:
1 GB free hard drive space