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Black and silver Dell OptiPlex 790 mini tower desktop with keyboard and mouse

DELL

Dell OptiPlex 790 Mini Tower i5-2400 16GB DDR3 500GB HDD desktop PC

SKU CH-4XFQ-85TP3

A business mini-tower desktop with a quad-core i5-2400, 16 GB DDR3, 500 GB hard drive and Windows 10 Pro

  • Screen sizeNo Screen
  • ProcessorIntel Core i5 2nd Gen
  • Memory size16 GB DDR3 Desktop RAM
  • Storage drive3.5 in 500 GB Hard Drive
  • GraphicsIntel HD Graphics 2000
  • ChipsetIntel Q67

Memory Capacity 16GB DDR3

  • Quad-core i5-2400 handles multitasking smoothly at 3.10 GHz
  • 16 GB DDR3 memory supports multiple apps without slowdown
  • 500 GB hard drive stores documents, media and backups
  • Windows 10 Pro 64-bit pre-installed for secure business features
  • Gigabit Ethernet plus WiFi USB adapter for flexible connectivity

Dell OptiPlex 790 Mini Tower Desktop

This Dell OptiPlex 790 Mini Tower desktop is a complete system built around a second-generation Intel Core i5-2400 quad-core processor. It arrives with 16 GB of DDR3 memory and a 3.5-inch 500 GB hard drive installed. Windows 10 Pro 64-bit is pre-loaded and a USB keyboard and mouse are included in the box.

Suits home office and student use.

The integrated Intel HD Graphics 2000 handles general productivity, web browsing and video playback without a separate card. Buyers who want more storage than 500 GB or who need dedicated graphics performance for modern gaming or intensive rendering should look at other configurations.

16 GB DDR3 memory installed

This unit ships with the maximum supported 16 GB of DDR3 desktop RAM already fitted across its DIMM slots. No further memory expansion is possible without replacing modules, so confirm the capacity meets your workload before purchase.

How it compares

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

Price $211.99
Cheaper than about 87% 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 Series
Product typeStudent / Home Office
Recommended useConsumer
Product colorBlack/Silver
Processor
ProcessorIntel Core i5 2nd Gen
CPUIntel Quad-Core i5 (2.9 GHz-3.3 GHz)
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 500 GB Hard Drive
SSD storageNo
Hard drive500 GB
Drive interfaceSATA
Optical driveDVD±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 adapterWiFi USB Adapter
Ethernet controllerIntegrated
Wi-Fi802.11 Wireless LAN
Ports & slots
Front USB ports4
Front audio jacks2
Video connectors1 VGA, 1 Display Port
Rear USB ports6
Ethernet port1x Headphone, 1x Microphone, 1x Line In
Size & build
Form factorDIMM 240-pin
ChassisMini Tower
Overall dimensions11.4 × 3.7 × 12.3
Product weight12 lb (5.44 kg)
In the box
Bundled mouseUSB
Pointing deviceUSB Mouse
Software
Operating systemWindows 10 Pro
Pre-installed softwareWindows 10 Pro Restore Media
More details
KeyboardUSB
Rear IEEE 13941 port
Keyboard typeUSB Keyboard

Other versions of this model

5 more in the same range

Questions about this item

How do I install the DDR3 memory modules and what step is often missed?

Align the notch on each 240-pin DDR3 module with the slot key, press down firmly until the retention clips snap shut, then verify the system recognises all 16 GB at boot.

Which component will likely need replacement first during the system's life?

The 3.5-inch 500 GB hard drive is the only moving part and typically fails before the solid-state components.

What thermal limit appears first when the i5-2400 runs at 3.10 GHz under sustained load?

The processor will hit its 3.40 GHz turbo ceiling and then throttle to stay within its thermal envelope.

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