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Black mini-tower desktop with silver accents, DVD drive slot and front ports

DELL

DELL OptiPlex 790 Mini Tower i5-2400 16GB DDR3 256GB SSD 2TB HDD

SKU CH-TYC2-GZ3CP

Mini-tower desktop with a quad-core Intel i5-2400, 16 GB DDR3, 256 GB SSD plus 2 TB hard drive, DVD-RW, Gigabit Ethernet, USB Wi-Fi dongle, keyboard and mouse, running Windows 10 Pro

  • Screen sizeNo Screen
  • ProcessorIntel Core i5 2nd Gen
  • Memory size16 GB DDR3 Desktop RAM
  • Storage drive2.5 in 256 GB Solid State + 3.5 in 2 TB Hard Drive
  • GraphicsIntel HD Graphics 2000
  • ChipsetIntel Q67

Memory Capacity 16GB DDR3

  • Quad-core i5-2400 handles multi-tasking smoothly
  • 16 GB DDR3 memory supports heavy workloads
  • 256 GB SSD + 2 TB HDD gives speed and capacity
  • Gigabit Ethernet provides fast wired connectivity
  • DVD±RW drive reads and writes optical media

Ready for Home and Student Use

This Dell OptiPlex 790 Mini Tower desktop arrives new with Windows 10 Pro installed and a USB keyboard and mouse included. The Intel 2nd Gen i5-2400 quad-core processor runs at 3.10 GHz and supports 64-bit computing. A 256 GB SSD provides the boot drive while a 2 TB hard drive adds bulk storage for files and applications.

Suits Office Tasks Not Demanding Graphics

The integrated Intel HD Graphics 2000 handles everyday productivity video output but lacks the 3D performance needed for modern gaming or GPU-accelerated creative work. Buyers who need discrete graphics power or more than 16 GB of DDR3 memory should consider a different platform. The 265 W power supply also limits upgrade headroom for high-wattage add-in cards.

Dual-Drive Storage Mix Decides Fit

The combination of a 2.5 inch 256 GB solid-state drive and a 3.5 inch 2 TB hard drive gives fast boot times plus large capacity in one chassis. If your workflow requires an all-flash array or a single drive larger than 2 TB, this configuration will not match that requirement.

How it compares

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

Price $261.99
Cheaper than about 78% 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 256 GB Solid State + 3.5 in 2 TB Hard Drive
SSD storage256 GB
Hard drive2 TB
Storage configuration2.5 in 256 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

How is the 16 GB DDR3 memory installed and what step do people get wrong?

The 16 GB DDR3 uses 240-pin DIMM slots; the common error is forcing a module the wrong way because the notch position differs from other DDR generations.

What maintenance or replacement will the 265 W power supply and DVD±RW drive need later?

The 265 W PSU may require capacitor replacement after years of continuous load, and the DVD±RW laser can degrade, needing a drive swap for disc writing.

What limit appears first on the Intel HD Graphics 2000 under sustained use?

The integrated Intel HD Graphics 2000 hits its thermal and memory-bandwidth ceiling quickly during prolonged 3D or video workloads, causing throttling.

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