Om Postal III op Windows te kunnen spelen met minimale grafische instellingen, moet uw computer aan de volgende eisen voldoen
OS *:
Windows 7 / Vista / XP
Processor:
3.0 Ghz P4, Dual Core 2.0 (or higher) or AMD64X2 (or higher)
Memory:
1GP XP/2GB Vista
Hard Disk Space:
13.5 GB
Video Card:
Video card must 128MB or more and should be a DirectX 9 –compatible with support for Pixel Shaders
DirectX®:
9.0c
Sound:
DirectX 9.0c Compatible