minimal:
reqprocessor: 1.5 GHz supporting SSE2 instructions
reqgraphics: OpenGL 3.0 Core Profile compatible
reqmemory: 1 GB RAM
reqdiskspace: 1 GB available space
reqsystem: Ubuntu 12.04 LTS, Steam OS, Arch Linux, Linux Kernel 2.6+ (i686 arch) / glibc 2.1.3+
recommended:
reqprocessor: 2 GHz supporting SSE2 instructions
reqgraphics: OpenGL 3.0 Core Profile compatible
reqmemory: 2 GB RAM
reqdiskspace: 2 GB available space
reqsystem: Ubuntu 12.04 LTS, Steam OS, Arch Linux, Linux Kernel 2.6+ (i686 arch) / glibc 2.1.3+
reqother: Having ARB_clip_control improves depth precision over large distances.