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

DELL

DELL OptiPlex 790 Mini Tower i7-2600 3.40GHz 4GB DDR3 500GB HDD DVDRW WiFi Win 10 Pro

SKU CH-CPB2-EAS3Z

A mini-tower desktop with a quad-core 3.40 GHz processor, 4 GB DDR3 RAM, 500 GB SATA hard drive, DVD±RW drive, USB Wi-Fi adapter and Windows 10 Pro 64-bit pre-installed

  • Screen sizeNo Screen
  • ProcessorIntel Core i7 2nd Gen
  • Memory size4 GB DDR3 Desktop RAM
  • Storage drive500 GB 3.5 in SATA Hard Drive
  • GraphicsIntel HD Graphics 2000
  • ChipsetIntel Q67

Memory Capacity 4GB DDR3

  • Quad-core i7-2600 at 3.40 GHz powers everyday multitasking
  • 4 GB DDR3 memory handles office apps and web browsing
  • 500 GB 3.5" SATA drive stores documents and media
  • DVD±RW drive reads and writes optical discs
  • Windows 10 Pro 64-bit pre-installed for immediate use

DELL OptiPlex 790 Mini Tower Desktop

This DELL OptiPlex 790 Mini Tower desktop computer is built for everyday office tasks and home study. An Intel i7-2600 quad-core processor running at 3.40 GHz with 3.90 GHz Turbo Boost handles standard applications and light multitasking. The system arrives with Windows 10 Pro 64-bit installed and includes a USB keyboard and mouse for immediate use.

Thermals Noise and Power in Normal Use

The Mini Tower chassis uses integrated graphics and a single 500 GB 3.5 inch SATA hard drive, keeping heat output modest during typical document work and web browsing. A DVD±RW drive adds minimal load. Fan noise stays low under these workloads, and the 4 GB DDR3 memory configuration draws little additional power.

Upgrade Path and When It Makes Sense

This unit replaces older Core 2 Duo or first-generation Core i systems where 64-bit support and four threads are now required. The jump is worth it when legacy software needs Windows 10 Pro compatibility and the 240-pin DDR3 slots allow an affordable move to 8 GB or 16 GB. Buyers needing solid-state speed, modern connectivity or discrete graphics should look elsewhere.

How it compares

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

Price $212.99
Cheaper than about 87% of the 14,711 comparable items (median $494.99).
Memory size 4 GB DDR3 Desktop RAM
Lower than about 97% of the 5,840 comparable items (median 16 GB).
RAM capacity 4 GB DDR3
Lower than about 95% of the 13,125 comparable items (median 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 i7 2nd Gen
CPUIntel Quad-Core i7-2600 3.4 GHz
CPU modelIntel Core i7-2600
ChipsetIntel Q67
Memory
Memory size4 GB DDR3 Desktop RAM
RAM capacity4 GB DDR3
RAM type and speedDDR3
Memory configuration1 GB x 4
Total memory slots4
Free memory slots0
Memory slots0/4
Max supported RAM16 GB
Storage
Storage drive500 GB 3.5 in SATA Hard Drive
SSD storageNo
Hard drive500 GB
Disc driveDVD±RW Drive
Drive interfaceSATA
Optical driveDVD±RW
Display
Screen sizeNo Screen
Graphics
GraphicsIntel 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
Included monitorNot included
Bundled mouseUSB
Pointing deviceUSB Mouse
Software
Operating systemWindows 10 Pro
Pre-installed softwareWindows 10 Pro Installed
More details
KeyboardUSB
Rear IEEE 13941 port
Keyboard typeUSB Keyboard

Other versions of this model

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Questions about this item

How do I install extra DDR3 memory in the OptiPlex 790 Mini Tower and which step is often missed?

Open the case, insert 240-pin DDR3 DIMMs into the motherboard slots, then enter the BIOS to confirm the new total is recognised — skipping that check is the common error.

Which parts of this OptiPlex 790 will need replacement first during its service life?

The 3.5-inch 500 GB SATA hard drive and the DVD±RW optical drive are the mechanical components most likely to require replacement after extended use.

What performance limit appears first when the i7-2600 runs at sustained load in this Mini Tower?

The 4 GB DDR3 memory capacity fills quickly under heavy multitasking, forcing the system to swap to the 500 GB hard drive and slowing overall response.

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