In order for you to play Killing Floor 2 on Windows with minimal graphics settings, your computer must meet the following requirements
Requires a 64-bit processor and operating system
OS *:
Win7 64-bit, Win8/8.1 64-bit
Processor (CPU):
Core 2 Duo E8200 2.66GHz or Phenom II X2 545
Memory (RAM):
3 GB RAM
Graphics Card:
GeForce GTS 250 or Radeon HD 4830
DirectX:
Version 10
Network:
Broadband Internet connection
Storage:
80 GB available space
In order to play Killing Floor 2 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
Operating System:
Windows 10 64-bit
Processor (CPU):
Core 2 Quad Q9550 2.83GHz or Phenom II X4 955
Memory (RAM):
4 GB RAM
Graphics Card:
GeForce GTX 560 or Radeon HD 6950
DirectX:
Version 11
Network:
Broadband Internet connection
Storage:
100 GB available space