Lenovo ThinkStation D20, 2.66 GHz, Intel® Xeon® 5000 Sequence, E5640, 6 GB, DVD-RW, Windows 7 Professional Lenovo ThinkStation D20. Processor frequency: 2.66 GHz, Processor family: Intel® Xeon® 5000 Sequence, Processor model: E5640. Internal memory: 6 GB, Internal memory type: DDR3-SDRAM, Memory clock speed: 1333 MHz. Optical drive type: DVD-RW. Operating system installed: Windows 7 Professional. Power supply: 1000 W. Chassis type: Tower. Product type: Workstation. Weight: 25 kg Lenovo's ThinkStation D20 has a way of slithering inside you and remaining there until it makes you believe it's irreplaceable. And that you won't be able to go without owning it. This workstation desktop has so much in store for people working for Hollyw... And so we are shown once again that Lenovo is a pro at its job. This ThinkStation D20 is more a specific desktop than one to be used by everybody no matter their field of expertise. The speed will attract you like there's no tomorrow....