Texas Instruments 89TVSC/CBX/1L1/A TI89TITANIUM Viewscreen Calculator Breakthrough Performance - unprecedented data performance, reaching speeds of over 300MB/s Superior Specs - Powered by an Intel Core 2 Duo processor & featuring 4GB of high-speed DDR2 memory Ready For the Future - PCI-e slot; Add optional 10Gb Ethernet adaptor for blazing performance Unique Dual DOM Design - equipped with a dual Disk On Module (DOM) Maximum Flexibility & Expansion - storage expansion with its stackable feature. Connect up to 5 N7700PROs. SCSI ready & support for multiple file systems including Ext3, XFS & ZFS