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Black and silver Dell OptiPlex 790 mini tower desktop with DVD-RW drive

DELL

DELL OptiPlex 790 Mini Tower i5-2400 16GB DDR3 128GB SSD 2TB HDD

SKU CH-E5P9-9STGT

A mini-tower desktop with a quad-core Intel i5-2400 processor, 16 GB DDR3 memory, 128 GB SSD plus 2 TB hard drive, DVD-RW drive, Gigabit Ethernet, USB Wi-Fi dongle and Windows 10 Pro

  • Screen sizeNo Screen
  • ProcessorIntel Core i5 2nd Gen
  • Memory size16 GB DDR3 Desktop RAM
  • Storage drive2.5 in 128 GB Solid State + 3.5 in 2 TB Hard Drive
  • GraphicsIntel HD Graphics 2000
  • ChipsetIntel Q67

Memory Capacity 16GB DDR3

  • Quad-core Intel i5-2400 at 3.10 GHz handles everyday multitasking
  • 16 GB DDR3 memory keeps multiple apps responsive
  • 128 GB SSD plus 2 TB HDD gives fast boot and ample storage
  • DVD±RW drive reads and writes optical media
  • Gigabit Ethernet and USB Wi-Fi dongle provide wired and wireless network access

Dell OptiPlex 790 Mini Tower

The Dell OptiPlex 790 Mini Tower is a desktop computer built around an Intel 2nd Gen i5-2400 quad-core processor running at 3.10 GHz with a 3.40 GHz turbo boost. It comes equipped with 16 GB of DDR3 memory, a 128 GB solid-state drive and a 2 TB hard drive. Windows 10 Pro 64-bit is pre-installed. A USB keyboard and mouse are included in the box.

Who this suits and who should look elsewhere

This system suits students, home-office workers and general users who need a responsive machine for web browsing, document editing and light multitasking. The dual-drive layout gives fast boot times plus large bulk storage. Buyers who need dedicated graphics performance for modern gaming or GPU-accelerated creative workloads should look elsewhere, as the platform relies on integrated Intel HD Graphics 2000 only.

Capacity and headroom

The 128 GB SSD handles the operating system and frequently used applications comfortably, while the 2 TB hard drive provides ample room for media libraries, backups and project files. 16 GB of DDR3 memory offers headroom for running multiple browser tabs and office suites simultaneously. The 265 W power supply and Mini Tower chassis limit the scope for adding high-power expansion cards or additional internal drives.

How it compares

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

Price $195.99
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 name790
Part number790/990
Product typeStudent / Home Office
Recommended useConsumer
Product colorBlack/Silver
Processor
ProcessorIntel Core i5 2nd Gen
CPUIntel 2nd Gen i5-2400
CPU model3.1 GHz
CPU socketLGA1155
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 drive2.5 in 128 GB Solid State + 3.5 in 2 TB Hard Drive
Hard drive2 TB
Storage configuration2.5 in 128 GB Solid State + 3.5 in 2 TB Hard Drive
Disc driveDVD±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
Wireless adapterUSB Dongle
Ethernet controllerIntegrated
Bluetooth supportYes
Ports & slots
Front USB ports4
Front audio jacks1x Headphone, 1x Microphone, 1x Line In
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
ChassisMini Tower
Overall dimensions24 × 22 × 12
Product weight24 lb (10.9 kg)
In the box
Bundled mouseUSB Mouse
Pointing deviceUSB Mouse
In the boxUSB Keyboard/Mouse and Power Cord
Software
Operating systemWindows 10 Pro
Pre-installed softwareWindows 10 Installed
More details
KeyboardUSB Keyboard
Keyboard typeUSB Keyboard

Other versions of this model

5 more in the same range

Questions about this item

What monitor inputs do I need for the Intel HD Graphics 2000 built into the i5-2400?

The integrated Intel HD Graphics 2000 drives VGA and DisplayPort outputs on the OptiPlex 790 Mini Tower, so your monitor must accept one of those connections.

Will my existing DDR3 240-pin DIMMs work if I keep them alongside the installed 16 GB?

The system uses DDR3 240-pin DIMM slots; any matching DDR3 modules you already own can be added provided total capacity stays within the board limit.

How can I confirm the 128 GB SSD is set as the Windows 10 boot drive after first power-on?

Open Settings > System > Storage and verify the 128 GB drive shows the Windows logo and is labelled as the boot device.

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