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Black and silver Dell OptiPlex 790 desktop tower with DVD drive

DELL

DELL OptiPlex 790 Desktop i5-2400 3.1GHz 16GB 480GB SSD

SKU CH-D09H-93QBA

Business desktop with a 3.1 GHz quad-core processor, 16 GB DDR3 memory and a 480 GB SATA SSD running Windows 10 Home

  • TypeBusiness Desktops & Workstations
  • Form FactorDesktop
  • UsageBusiness
  • ColorBlack/Silver
  • ProcessorQuad i5 2400 3.1Ghz
  • Processor Main Features64 bit Quad-Core Processor
  • Quad-core i5-2400 at 3.1 GHz handles daily business tasks
  • 16 GB DDR3 memory keeps multiple apps responsive
  • 480 GB SATA SSD boots Windows 10 Home quickly
  • Gigabit Ethernet provides wired 1000 Mbps network speed
  • DisplayPort and VGA outputs connect two monitors

Business desktop for office tasks

The Dell OptiPlex 790 is a business desktop built around a quad-core Intel Core i5 2400 running at 3.1 GHz with 16 GB of DDR3 memory and a 480 GB SATA SSD. It ships with Windows 10 Home 64-bit and includes a DVD-RW drive. The integrated Intel HD 2000 graphics drive DisplayPort and VGA outputs for dual-monitor setups. This configuration suits general office productivity, web browsing and legacy business applications.

Sustained load behaviour

The 6 MB L3 cache and four cores handle multi-threaded office workloads such as large spreadsheets or background updates without relying on short turbo bursts. The SATA SSD keeps the operating system and applications responsive during extended sessions. Passive cooling on the integrated graphics means there is no dedicated GPU to throttle under continuous use. Gigabit Ethernet provides a stable wired connection for network-heavy tasks.

Installation and common issues

The desktop form factor uses standard SATA power and data cables, so adding or replacing the 480 GB drive is straightforward. Eight USB ports and legacy serial and parallel ports are exposed on the chassis for peripheral connectivity. No wireless card is fitted, so Wi-Fi requires a separate USB or PCIe adapter. The included Windows 10 licence is tied to the hardware; a clean reinstall uses the same edition without entering a key.

Highlights

  • Quad-core i5-2400 at 3.1 GHz handles daily business tasks
  • 16 GB DDR3 memory keeps multiple apps responsive
  • 480 GB SATA SSD boots Windows 10 Home quickly
  • Gigabit Ethernet provides wired 1000 Mbps network speed
  • DisplayPort and VGA outputs connect two monitors

Specifications

BrandDELL
SeriesOptiPlex
Model790
TypeBusiness Desktops & Workstations
Form FactorDesktop
UsageBusiness
ColorBlack/Silver
ProcessorQuad i5 2400 3.1Ghz
Processor Main Features64 bit Quad-Core Processor
Cache Per Processor6 MB L3 Cache
Memory16GB
Storage480GB SSD SATA
GraphicsIntel HD 2000
EthernetGigabit Ethernet
Wireless CardNone
MonitorNone
SpeakerNone
KeyboardNone
MouseNone
Operating SystemWindows 10 Home 🙋‍♀️Microsoft Windows 11 Pro Upgrade
‍👉Check ABS/Helix computers with Windows 11
ChipsetIntel Q65
CPU TypeIntel Core i5
CPU NameIntel Core i5-2400
CPU Main Features64 bit Quad-Core Processor
GPU/VGA TypeIntel HD Graphics 2000
Graphics InterfaceIntegrated video
Memory Capacity16GB DDR3
SSD480GB
Optical Drive TypeDVD+R/RW
Screen SizeNo Screen
TouchscreenNo
Audio ChipsetIntegrated
LAN ChipsetIntegrated
LAN Speed10/100/1000Mbps
Front USB4
Front Audio Ports1
Video Ports1 VGA, 1 Display Port
Rear USB4
RJ451 port
Rear Audio Ports1 port

Questions about this item

How much heat and power does the i5-2400 quad-core 3.1 GHz CPU with 6 MB L3 cache produce when running all day?

The i5-2400 quad-core processor runs at 3.1 GHz with 6 MB L3 cache; the 480 GB SATA SSD has no moving parts, and the 16 GB DDR3 memory operates at standard desktop voltage, so sustained load stays within typical business desktop limits.

What display cable do I need for the DisplayPort and VGA outputs on this OptiPlex 790?

The system provides both DisplayPort and VGA video outputs, so you can connect a monitor with either a DisplayPort cable or a VGA cable depending on your screen's inputs.

Will my existing PCIe add-in cards work in this desktop's expansion slots?

The OptiPlex 790 desktop form factor includes standard PCIe slots, allowing you to install compatible PCIe graphics, networking or storage cards you already own.

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