Editions Profil BitDefender Total Security 2011. Software type: OEM, License quantity: 5 user(s), Number of years: 1 year(s). Minimum hard disk space: 1024 MB, Minimum RAM: 1024 MB, Minimum processor: Intel Core Duo 1.66 GHz. Compatible operating systems: Windows XP, SP3 (SP2 x64), Vista (SP1), Windows 7