minimal:
reqprocessor: 1.7+ GHz or better
reqgraphics: Radeon HD5450 or better; 256 MB or higher
reqmemory: 1 GB RAM
reqdiskspace: 750 MB available space
reqsystem: Lion (OSX 10.7.X)
reqother: Not recommended for Intel GMA Graphics or Mac Minis or early-generation MacBooks

recommended:
reqprocessor: 3.46GHz Pentium 4 / Athlon LE-1600
reqgraphics: GeForce GT 320 / 512MB Radeon HD 5550
reqmemory: 2 GB
reqdiskspace: 500 MB
reqsystem: Windows 7