Type: Dell Precision T5500 Workstation. Seller refurbished unit may show minor signs of cosmetic blemishes.Processor: Dual Intel Xeon E5620 Quad Core 2.4Ghz Processors. 16 Virtual Cores in Hyperthreading Mode! (Additional processor configurations available).Memory: 12GB. Supports up to 144GB of total memory, Three-channel memory architecture per processor with up to 1333MHz DDR3 ECCRegistered DIMM memory. Up to 9 DIMM slots; 6 slots (2 per channel) on motherboard and additional 3 slots on optional 2nd processor riser card (actual memory speed dependent on the processor capability)..Hard Drives: 1TB 7.2K PC SATA Drive (Additional hard drive configurations available).Drive Bays: Chassis supports up to two internal drives plus 3rd/4th drives in flex/optical bays (mini-tower) (6.0TB maximum storage capacity). Raid Controller: SATA 3.0GB/s host controller (part of the integrated Intel ICH10R I/O controller hub); Optional SAS 6/ir controller supports SAS drives with hostbasedRAID 0 or 1; Optional PERC 6/i PCIe SAS/SATA/SSD hardware RAID card supports RAID 0, 1, 5, (RAID5 in mini-tower orientation only)Graphics: Nvidia Quadro 4000 2GB GDDR5 Graphic Card (Additional graphic cards available).Operating System: Not Included.Power Supply: 875W 85% efficient Power Factor Correcting (PFC) power supply.Optical Drive(s): DVDRW Drive.Dimensions: 45 Lbs, 18.54'' x 6.73'' x 17.64'' (L x W x H)Networking: Integrated Broadcom 5754 Gigabit Ethernet controller; 2nd Gigabit port available via optional PCIe Broadcom Gigabit controller card.Slots: All full length except as noted. Two PCIe x16 slots wired as x8 (half length); two PCIe x16 Gen 2 graphics slots up to 150W each; one PCI-X 64bit/100MHz slot with support for 3.3V or universal cards; one PCI 32-bit/33MHz 5V slot (half length in desktop chassis orientation). Standard I/OPorts: Eleven USB 2.0: two on front panel, six on back panel, three internal: one serial; one parallel; two PS/2; one RJ-45; stereo line-inand headphone line-out on back panel; microphone and headphone connector on front panel; one ESATA port on back panel,front and rear IEEE 1394a ports are provided with optional 1394 PCIe card. Peripherals: Power Cable Included. Mouse, Keyboard, and Video Cable Not Included.*Systems are built to order and fully customizable. Please call for more information. Note that a stock photo is used and unit may differ depending on configuration.