In order for you to play Yield! Fall of Rome on macOS with minimal graphics settings, your computer must meet the following requirements
Operating System:
10.11 (El Capitan)
Processor (CPU):
Intel Core Duo Processor (2GHz or better)
Memory (RAM):
4 GB RAM
Graphics Card:
ATI Radeon HD 6750 / NVIDIA GeForce 320 / NVIDIA GeForce 9600 or higher, 1024MB graphics memory required
Storage:
500 MB available space