The Dell OptiPlex 990 desktop is a business-class small-form factor PC. This Dell PC allows users to experience powerful multitasking by supporting up to four displays at one time. The Dell OptiPlex 990 desktop features a 3.4 GHz Intel Core i7 central processing unit for a reliable computing experience, with an 8 MB installed cache memory. Moreover, the installed 4 GB of DDR3 SDRAM can be expanded up to a maximum of 16 GB. The Serial ATA hard drive offers a 500 GB capacity to store photographs, music, video, and documents, or whatever files and software a user may require. Furthermore, this Dell PC uses an Intel Q67 Express chipset and an Intel Graphics Media Accelerator HD 2000 graphics card. Users can connect this Dell PC to the Internet via the integrated 10/100/1000 Mbps Gigabit Ethernet network card. This small-form factor PC measures 12.3 inches deep by 11.8 inches tall by 3.7 inches wide and weighs 13 lbs.