What are the system requirements (recommended operating environment) for Serato DJ?

Serato DJ 1.8.0 minimum system requirements

Windows
Windows 8.1 /Windows 7
(CPU) Intel Core i3, i5, i7 1.07GHz+ / 4GB RAM
-1280 x 720 screen resolution
-Available USB 2.0 port
-Free HDD Space 5GB

Mac
Mac OS X 10.10 / 10.9 / 10.8
(CPU) Intel Core i3, i5, i7 1.07GHz+ / 4GB RAM
-1280 x 720 screen resolution
-Available USB 2.0 port
-Free HDD Space 5GB

See the Serato website for details.
http://serato.com/dj/downloads#min-specs