Sony VAIO VGN-Z570N/B 13.1" Laptop (2.53 GHz Intel Core 2 Duo P9500 Processor, 3 GB of RAM, 320 GB Hard Drive, Vista Business) Black Intel Core 2 Duo P9500 processor (2.53GHz), 6MB L2 cache Genuine Microsoft Windows Vista Business with SP1/XP downgrade 13.1" widescreen LCD with XBRITE-DuraView technology & LED backlight 3GB of pre-installed RAM & a roomy 320GB Serial ATA hard drive Biometric fingerprint scanner & hybrid graphics system