minimal:
reqprocessor: Dual core CPU 2.4 GHz
reqgraphics: GeForce GTS 450-class (Intel HD 4000)
reqmemory: 4 GB RAM
reqdiskspace: 1.2 GB
reqsystem: Linux Ubuntu 12.04
reqother: recent binary ATI or NVidia drivers (MESA may not work reliably)

recommended:
reqprocessor: Quad core CPU 3.0 GHz
reqgraphics: GeForce GTX 760-class (2 GB)
reqmemory: 6 GB RAM
reqsystem: Linux Ubuntu 12.04
reqother: recent binary ATI or NVidia drivers (MESA may not work reliably)