selling a dell precision 690 dual xeon x5140 with 6GB ddr2 RAM and Matrox G450 Quad card (or can substitute NVS290). Windows 7 professional, 64-bit OS Office 2007 Professional Also have XP64 or XP-32 media that you can downgrade to if you so desire. Machine has two dual-core CPUs so it is essentially a single quad-core without hyper threadding. It has two 80GB HDD in a mirror for a boot drive. Machine comes with a 3rd 80GB HDD as a spare. I have tons of HDD so I can add more capacity but HDD are cheap so that may be best for the buyer to do. I am in NYC, do yourself a favor and lookup shipping prices. This thing is big, heavy and you can't insure it without the proper OEM packaging (which I don't have) or unless you pay FedEx/UPS to pack which is expensive. Figure $100 to ship insured, maybe more depending on where you are. Located in 10006 zip code. Its the bigger one - this is a full-sized workstation tower. It may not fit under some desks and it is very heavy. I am no longer using this and I have to pay electricity so it sits idle and collects dust. $350 picked up in NYC (wall st. area) and its yours.