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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

  • TypeStudent / Home Office
  • Form FactorDIMM 240-pin
  • UsageConsumer
  • ColorBlack/Silver
  • ProcessorIntel Quad-Core i5 (2.9GHz-3.30GHz)
  • Processor Main Features64 bit Quad-Core Processor

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.

Highlights

  • 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

Specifications

BrandDELL
SeriesOptiPlex
Model790
Part Number790/990 Series
TypeStudent / Home Office
Form FactorDIMM 240-pin
UsageConsumer
ColorBlack/Silver
ProcessorIntel Quad-Core i5 (2.9GHz-3.30GHz)
Processor Main Features64 bit Quad-Core Processor
Memory16 GB DDR3 Desktop RAM
Storage3.5" 500 GB Hard Drive
GraphicsIntel HD Graphics 2000
AudioSound card - Integrated
EthernetGigabit Ethernet
Wireless CardWiFi USB Adapter
CaseMini Tower
KeyboardUSB
MouseUSB
Operating SystemWindows 10 Pro
Software IncludedWindows 10 Pro Restore Media
ChipsetIntel Q67
CPU TypeIntel Core i5 2nd Gen
Installed Qty1
Max Supported Qty1
CPU Main Features64 bit Quad-Core Processor
GPU/VGA TypeIntel HD Graphics 2000
Graphics InterfaceIntegrated video
Memory Capacity16GB DDR3
Memory SpeedDDR3
Memory Spec4 GB x 4
Memory Slot (Total)4
Memory Slot (Available)0
Memory Slots (Available/Total)0/4
Maximum Memory Supported16 GB
SSDNo
HDD500GB
HDD InterfaceSATA
Optical Drive TypeDVD±RW
Screen SizeNo Screen
Audio ChipsetIntegrated
LAN ChipsetIntegrated
LAN Speed10/100/1000Mbps
WLAN802.11 Wireless LAN
Front USB4
Front Audio Ports2
Video Ports1 VGA, 1 Display Port
Rear USB6
Rear IEEE 13941 port
RJ451x Headphone, 1x Microphone, 1x Line In
Keyboard TypeUSB Keyboard
Mouse TypeUSB Mouse
Dimensions (H x W x D)11.4 x 3.7 x 12.3
Weight12 Lbs.

Other versions of this model

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Same family, different memory, cooler or clock — compare before you commit.

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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