In order for you to play Galactic Civilizations III on Windows with minimal graphics settings, your computer must meet the following requirements
Requires a 64-bit processor and operating system
OS *:
64-bit Windows 10 / 8.x / 7
Processor (CPU):
1.8 GHz Intel Core 2 Duo / AMD K10 Dual-Core
Memory (RAM):
4 GB RAM
Graphics Card:
512 MB DirectX 10.1 Video Card (AMD Radeon HD5x00 Series / Nvidia GeForce 500 Series / Intel HD 4000 or later)
DirectX:
Version 10
Network:
Broadband Internet connection
Storage:
12 GB available space
Sound Card:
DirectX Compatible Sound Card
In order to play Galactic Civilizations III on Windows with maximum graphics settings, you need a computer with a configuration no worse than the following
Requires a 64-bit processor and operating system
OS *:
64-bit Windows 10 / 8.x / 7
Processor (CPU):
2.3 GHz Intel Core i5 Processor or Equivalent
Memory (RAM):
6 GB RAM
Graphics Card:
1 GB DirectX 10.1 Video Card
DirectX:
Version 10
Network:
Broadband Internet connection
Storage:
15 GB available space
Sound Card:
DirectX Compatible Sound Card