In order for you to play XCOM 2 on Windows with minimal graphics settings, your computer must meet the following requirements
OS *:
Windows® 7, 64-bit
Processor (CPU):
Intel Core 2 Duo E4700 2.6 GHz or AMD Phenom 9950 Quad Core 2.6 GHz
Memory (RAM):
4 GB RAM
Graphics Card:
1GB ATI Radeon HD 5770, 1GB NVIDIA GeForce GTX 460 or better
DirectX:
Version 11
Storage:
45 GB available space
Sound Card:
DirectX compatible sound card
In order to play XCOM 2 on Windows with maximum graphics settings, you need a computer with a configuration no worse than the following
OS *:
Windows® 7, 64-bit
Processor (CPU):
3GHz Quad Core
Memory (RAM):
8 GB RAM
Graphics Card:
2GB ATI Radeon HD 7970, 2GB NVIDIA GeForce GTX 770 or better
Storage:
45 GB available space
Sound Card:
DirectX compatible sound card