http://pcworld.bg/13389_microsoft_security_essentials_lovi_98_ot_virusiteavira е баси пищялката е кажи авира премиум колко рам гълта
и аз казах макс 150 мб може и 100 мб можеи 127 може 120
aviraSystem requirements
For Avira AntiVir Personal to work perfectly, the computer system must fulfill the
following requirements:
– Computer as from Pentium, at least 266 MHz
– Operating system
– Windows 2000, SP4 and update rollup 1 or
– Windows XP, SP2 (32 or 64 Bit) or
– Windows Vista (32 or 64 Bit, SP 1 recommended)
– At least 100 MB of free hard disk memory space (more if using Quarantine for
temporary storage)
–
At least 192 MB RAM under Windows 2000/XP–
At least 512 MB RAM under Windows Vista– For the installation of Avira AntiVir Personal: Administrator rights
– For all installations: Windows Internet Explorer 6.0 or higher
– Internet connection where appropriate (see Installation)
Windows XP (32 or 64 Bit), SP2 Windows Vista (32 Bit or 64 Bit), SP1 Windows 7
Windows 2000, SP4 and Update Rollup 1
At least 192 MB RAM (Windows XP)
At least 512 MB RAM (Windows Vista)40 MB + quarantine For installation:100 MB (temporary)
АVG Processor Intel Pentium 1.5 GHz or faster processor [Memory 512 MB
avast
Memory:128 MB RAM, ако не и повече Hard Drive Space: 100 MB
от не безплатните няма да постна други безплатни не се сещам