Home > Hardware > Desktops > Dell Desktops > Dell Optiplex 990

Dell Optiplex 990 Desktop PC

Are you looking for powerful productivity and performance in a business class PC? Then consider the Dell OptiPlex 990 which easily handles even the most complex computing requirements and also supports virtualization. The OptiPlex 990 has four chassis options including a mini tower, desktop, small form factor, and ultra small form factor to provide ultimate PC design flexibility. The powerful OptiPlex supports Intel 2nd Generation Core i7 or i5 Quad Core, Core i3 Dual Core, and Pentium Dual Core processor families for up to 3.4GHz 8MB of processing power. The ultra small form factor has a maximum memory capacity of 8GB, and the remaining three chassis options all have a maximum capacity of 16GB. All form factors can be configured with PC3-12800 1600MHz DDR3 memory across four DIMM slots. Aventis Systems offers the 990 with SATA hard disk drive or solid state drive options for a maximum storage capacity of 4TB. The ultra small form factor takes 2.5” hard drives while the other three chassis take 3.5” drives. The 990 has various expansion options including the mini tower with two 5.25” bays and two 3.5” internal bays, and the ultra small form factor with one 5.25” bay and one 2.5” internal bay. Both the desktop and small form factor chassis have one 5.25” bay and one 3.5” internal bay. For I/O the ultra small form factor is equipped with seven USB 2.0 ports, two front and five rear, and the other three chassis options all have eight USB 2.0 ports, two front and six rear. Browse the Dell OptiPlex 990 models below to find the perfect premier PC to suit your business-class requirements.


  • Chassis Options: Mini-Tower (MT), Desktop (DT), Small Form Factor (SFF), Ultra Small Form Factor (USFF)
  • Processor Options: Up to 1, Intel 2nd Generation Core i7/i5 Quad Core, Core i3 Dual Core and Pentium Dual Core
    • Maximum Core Count: 4
    • Maximum Cache: 8MB
    • Maximum Clock Speed: 3.4GHz
  • Memory:
    • DIMM Slots: 4 (MT/DT/SFF); 2 (USFF)
    • Maximum Capacity: 16GB (MT/DT/SFF); 8GB (USFF)
    • Memory Type: DDR3 PC3-10600
    • Maximum Memory Speed: 1333 MHz
  • Storage:
    • Hard Drive Options: SATA or SSD; 3.5” (MT/DT/SFF); 2.5” (USFF)
    • Maximum Internal Storage: 4TB
  • Connectivity: Intel® 82579LM Gigabit Ethernet LAN 10/100/1000 (Remote Wake Up, PXE support and Intel Active Management Technology support)
  • I/O Ports:
    • MT/DT/SFF: 8 External USB 2.0 ports (2 front, 6 rear); 1 RJ-45; 1 Serial; 1 VGA; 1 DisplayPort; 2 PS/2; 2 Line-in (stereo/microphone), 2 Line-out (headphone/speaker)
    • USFF:7 USB 2.0 ports (2 Front, 5 Rear); 1 RJ-45; 1 VGA; 2 DisplayPort; 2 Line-in (stereo/microphone), 2 Line-out (headphone/speaker)

Are you looking for software upgrades for your existing desktops, workstations or laptops? Please check out our Microsoft Windows Operating Systems and Office software. Can’t find what you’re looking for? We are here to assist you! Please use our or call us at 1.855.AVENTIS (283.6847) during regular business hours, or email us at Sales@AventisSystems.com.