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

DELL

DELL OptiPlex 790 Mini Tower i7-2600 3.40GHz 8GB DDR3 128GB SSD 2TB HDD desktop PC

SKU CH-SK78-X5R4M

A compact mini-tower desktop with a quad-core i7-2600, 8GB DDR3, a 128GB SSD plus 2TB hard drive, DVD-RW and Windows 10 Pro

  • TypeStudent / Home Office
  • Form FactorDIMM 240-pin
  • UsageConsumer
  • ColorBlack/Silver
  • ProcessorIntel 2nd Gen i7-2600
  • Processor Main Features64 bit Quad-Core Processor

Memory Capacity 8GB DDR3

  • Quad-core Intel i7-2600 handles multi-tasking smoothly
  • 128 GB SSD plus 2 TB HDD gives fast boot and ample storage
  • 8 GB DDR3 memory supports everyday workloads
  • Windows 10 Pro 64-bit installed with Certificate of Authenticity
  • DVD-RW drive and USB Wi-Fi dongle included

Purpose-built desktop

The Dell OptiPlex 790 Mini Tower is a new desktop computer aimed at home-office and student users who need a ready-to-run Windows 10 Pro system. It ships with a genuine Intel Core i7-2600 quad-core processor operating at 3.40 GHz with a 3.90 GHz turbo frequency. Eight gigabytes of DDR3 memory and a dual-drive layout combining a 128 GB solid-state drive with a 2 TB hard drive provide both responsiveness and capacity.

Build integration

The Mini Tower chassis uses a standard 265 W power supply and includes a DVD±RW optical drive, integrated Gigabit Ethernet and a USB wireless dongle for network connectivity. A keyboard and mouse are bundled, so the only required addition is a display. Two memory slots accept DDR3 DIMMs up to a 16 GB total, while 2.5-inch and 3.5-inch bays are already occupied by the installed drives, leaving no free drive bays for further internal storage expansion.

Sustained operation

The 265 W power supply and Intel HD Graphics 2000 are sized for typical office workloads rather than continuous heavy compute or gaming. Under prolonged multi-threaded tasks the quad-core CPU will remain within its thermal envelope, but the modest power budget and integrated graphics limit sustained performance for video rendering or modern 3D applications. Buyers who need dedicated graphics headroom or higher continuous power draw should consider a different platform.

Highlights

  • Quad-core Intel i7-2600 handles multi-tasking smoothly
  • 128 GB SSD plus 2 TB HDD gives fast boot and ample storage
  • 8 GB DDR3 memory supports everyday workloads
  • Windows 10 Pro 64-bit installed with Certificate of Authenticity
  • DVD-RW drive and USB Wi-Fi dongle included

Specifications

BrandDELL
SeriesOptiPlex
Model790
Part Number790/990
TypeStudent / Home Office
Form FactorDIMM 240-pin
UsageConsumer
ColorBlack/Silver
ProcessorIntel 2nd Gen i7-2600
Processor Main Features64 bit Quad-Core Processor
Memory8GB DDR3 Desktop RAM
Storage2.5" 128 GB Solid State + 3.5" 2TB Hard Drive
Optical DriveDVD±RW Drive
GraphicsIntel HD Graphics 2000
AudioSound card - Integrated
EthernetGigabit Ethernet
Wireless CardUSB Dongle
Power Supply265W
MonitorMonitor not included
CaseMini Tower
KeyboardUSB Keyboard
MouseUSB Mouse
Operating SystemWindows 10 Pro
Software IncludedWindows 10 Installed
ChipsetIntel Q67
CPU TypeIntel Core i7 2nd Gen
Installed Qty1
Max Supported Qty1
CPU Name3.40GHz
CPU Socket TypeLGA 1155
CPU Main Features64 bit Processor
GPU/VGA TypeIntel HD Graphics 2000
Graphics InterfaceIntegrated video
Memory Capacity8GB DDR3
Memory SpeedDDR3
Memory Spec2 GB x 4
Memory Slot (Total)4
Memory Slot (Available)0
Memory Slots (Available/Total)0/4
Maximum Memory Supported16 GB
HDD2TB
HDD InterfaceSATA
Storage Spec2.5" 128 GB Solid State + 3.5" 2TB Hard Drive
Optical Drive TypeDVD-R/RW
Screen SizeNo Screen
Audio ChipsetIntegrated
LAN ChipsetIntegrated
LAN Speed10/100/1000Mbps
BluetoothYes
Front USB4
Front Audio Ports1x Headphone, 1x Microphone, 1x Line In
PS/22
Video Ports1 VGA, 1 Display Port
Rear USB6
RJ451 port
Rear Audio Ports1x Headphone, 1x Microphone, 1x Line In
Keyboard TypeUSB Keyboard
Mouse TypeUSB Mouse
Dimensions (H x W x D)24 x 22 x 12
Weight24 lbs
Package ContentsUSB Keyboard/Mouse and Power Cord

Other versions of this model

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Questions about this item

How long can the i7-2600 hold its 3.90 GHz turbo before the 265 W power supply hits its limit?

The 265 W unit powers the i7-2600, 8 GB DDR3, 128 GB SSD, 2 TB HDD and DVD±RW simultaneously, so sustained turbo on all four cores remains within the supply's continuous rating.

What noise and heat should I expect from the Mini Tower when the i7-2600 runs at 3.90 GHz all day?

The stock chassis fan and CPU cooler keep the i7-2600 at safe temperatures under full load; the 265 W supply fan adds a low, steady airflow noise typical of an office Mini Tower.

Do I need to buy a monitor separately to use the Intel HD Graphics 2000 output?

Yes, the system ships without a monitor; you must provide a display with VGA, DisplayPort or DVI input to connect to the integrated graphics ports.

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