Minimum System Requirements
Windows
OS:
Windows XP Service Pack 3
Processor:
Single-core 2.2 GHz
Memory:
1 GB RAM
Graphics:
OpenGL 1.5 compliant with 256 MB of video RAM, no shader support necessary
Storage:
550 MB HD space
Recommended System Requirements
Windows
OS:
Windows Vista or 7
Processor:
Dual-core 2.4 GHz
Memory:
2 GB RAM
Graphics:
OpenGL 1.5 compliant with 512 MB of video RAM, no shader support necessary
Storage:
550 MB HD space
These are the requirements the publisher lists on Steam.
