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Black and silver Dell OptiPlex 990 mini tower with keyboard and mouse

DELL

DELL OptiPlex 990 Mini Tower i7-2600 16 GB DDR3 1 TB HD DVD-RW Windows 10 Pro WiFi desktop PC

SKU CH-EGEC-BRQZ7

A business desktop with a quad-core i7-2600, 16 GB DDR3, 1 TB hard drive and Windows 10 Pro

  • Screen sizeNo Screen
  • ProcessorIntel Core i7 2nd Gen
  • Memory size16 GB DDR3 Desktop RAM
  • Storage drive3.5 in 1 TB SATA Hard Drive
  • GraphicsIntel HD Graphics 2000
  • ChipsetIntel Q67
  • Quad-core i7-2600 at 3.40 GHz handles multitasking
  • 16 GB DDR3 memory supports demanding workloads
  • 1 TB SATA hard drive stores large file collections
  • Windows 10 Pro 64-bit pre-installed for immediate use
  • USB keyboard and mouse included for quick setup

Dell OptiPlex 990 Mini Tower for home office

The Dell OptiPlex 990 Mini Tower is a desktop computer built for student and home office use. It runs on an Intel 2nd Gen i7-2600 processor with 64-bit architecture. The system includes 16 GB of DDR3 memory and a 3.5-inch 1 TB SATA hard drive. Windows 10 Pro 64-bit comes pre-installed with a USB keyboard and mouse included.

265 W power supply with integrated graphics

A 265 W power supply unit delivers power to the components. The Intel HD Graphics 2000 integrated graphics controller handles video output without a discrete card. Integrated audio and Gigabit Ethernet are built onto the motherboard. This combination keeps heat output and acoustic noise low during typical office workloads.

Quad-core 3.40 GHz CPU with 3.80 GHz Turbo Boost

The i7-2600 quad-core processor operates at a base frequency of 3.40 GHz and can reach 3.80 GHz with Turbo Boost across eight threads. Sustained multi-tasking performance is supported by the 16 GB DDR3 configuration. The 1 TB hard drive provides ample capacity for applications and data files over long sessions.

How it compares

Measured against everything we stock in Tower & Compact Desktop PCs, at today’s prices. Recalculated every night.

Price $192.99
Cheaper than about 90% of the 14,711 comparable items (median $494.99).
Memory size 16 GB DDR3 Desktop RAM
Typical for this category: the median of 5,840 items is 16 GB.
RAM capacity 16 GB DDR3
Typical for this category: the median of 13,125 items is 16 GB.

Specifications

Product
Brand nameDELL
Product lineOptiPlex
Model name990
Part number990
Product typeStudent / Home Office
Recommended useConsumer
Product colorBlack/Silver
Processor
ProcessorIntel Core i7 2nd Gen
CPUIntel 2nd Gen i7-2600
CPU model3.4 GHz
CPU socketLGA 1155
ChipsetIntel Q67
Memory
Memory size16 GB DDR3 Desktop RAM
RAM capacity16 GB DDR3
RAM type and speedDDR3
Memory configuration4 GB x 4
Total memory slots4
Free memory slots0
Memory slots0/4
Max supported RAM16 GB
Storage
Storage drive3.5 in 1 TB SATA Hard Drive
SSD storageNo
Hard drive1 TB
Storage configuration3.5 in 1 TB SATA Hard Drive
Disc drive16X DVD±RW Drive
Drive interfaceSATA
Optical driveDVD-R/RW
Display
Screen sizeNo Screen
Graphics
GraphicsIntel HD Graphics 2000
GPUIntel HD Graphics 2000
GPU interfaceIntegrated video
Audio & video
SoundSound card - Integrated
Audio chipIntegrated
Connectivity
Network speed10/100/1000 Mbit/s
Wired networkGigabit Ethernet
Ethernet controllerIntegrated
Bluetooth supportYes
Ports & slots
Front USB ports4
PS/2 ports2
Video connectors1 VGA, 1 Display Port
Rear USB ports6
Ethernet port1 port
Rear audio jacks1x Headphone, 1x Microphone, 1x Line In
Power
Power supply265 W
Size & build
Form factorDIMM 240-pin
Overall dimensions14.2 × 6.9 × 16.4
Product weight19.55 lb (8.87 kg)
In the box
Included monitorNot included
Bundled mouseUSB Mouse
Pointing deviceUSB Mouse
Software
Operating systemWindows 10 Pro
Pre-installed softwareWindows 10 Pro Restore Media
More details
KeyboardUSB Keyboard
Keyboard typeUSB Keyboard

Questions about this item

How do I install additional DDR3 memory in the 240-pin DIMM slots and which step is often missed?

Power off, unplug the cord, open the Mini Tower case, align the notch on each DDR3 module with the 240-pin slot key, press firmly until the retention clips click, then close the case before powering on.

Which components in this OptiPlex 990 Mini Tower are most likely to need replacement after several years of use?

The 3.5-inch 1 TB SATA hard drive and the 265 W power supply are the parts that typically wear out first and may require replacement.

What is the first performance limit reached when the Intel Core i7-2600 runs at 3.80 GHz Turbo Boost for extended periods?

The 265 W power supply and the Mini Tower thermal envelope limit sustained Turbo Boost operation before the processor can maintain 3.80 GHz continuously.

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