G DATA AntiVirus 2011. Software type: Box, License quantity: 3 user(s), Number of years: 1 year(s). Minimum hard disk space: 257 MB, Minimum RAM: 512 MB. Compatible operating systems: - Windows 7(32 Bit/64 Bit) - Windows Vista(32 Bit/64 Bit) - Windows XP SP2+(32 Bit/64 Bit)