Here are the PowerWash Simulator Warhammer 40,000 Special Pack System Requirements (Minimum)
CPU: Intel i5-760 (4*2800), AMD Phenom II
RAM: 4 GB
VIDEO CARD: GeForce GTX 760, AMD R7-260X
DEDICATED VIDEO RAM: 2048 MB
PIXEL SHADER: 5.0
VERTEX SHADER: 5.0
OS: Windows 8 (64-bit) or newer
FREE DISK SPACE: 6 GB