Lenovo ThinkStation P900 30A40028US Workstation - Xeon E5-2643 v3 - 16 GB RAM - 512 GB SSD - Tower - Windows 7 Professional 64-bit - Serial ATA/600 Controller - 0, 1, 5, 10 RAID Levels - Gigabit Ethernet 30A40028US

Thermal Design: Elegant & Efficient Patented tri-channel cooling with just 3 system fans - as opposed to 10 that other workstations typically rely on - and a direct cooling air baffle directs fresh air into the CPU and memory. ThinkStation P900 delivers new technologies and design to keep your workstation cool and quiet. Optional Flex Module The innovative Flex Module lets you customize I/O ports, so you add only what you need. Using the 5.25" bays, you can mix and match components including an ultraslim ODD, 29-in-1 media card reader, Firewire, and eSATA.