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

DELL

DELL OptiPlex 790 Mini Tower i5-2400 3.10GHz 16GB DDR3 1TB HDD

SKU CH-W0MR-X56CB

A mini-tower desktop with a quad-core i5-2400 at 3.10GHz, 16GB DDR3, 1TB hard drive, DVD±RW, WiFi USB adapter and Windows 10 Pro

  • Screen sizeNo Screen
  • ProcessorIntel Core i5 2nd Gen
  • Memory size16 GB DDR3 Desktop RAM
  • Storage drive3.5 in 1000 GB Hard Drive
  • GraphicsIntel HD Graphics 2000
  • ChipsetIntel Q67

Memory Capacity 16GB DDR3

  • Quad-core Intel i5-2400 at 3.10 GHz handles everyday tasks
  • 16 GB DDR3 memory keeps multiple programs responsive
  • 1 TB 3.5-inch SATA hard drive stores large file collections
  • DVD±RW drive reads and writes optical media
  • Windows 10 Pro 64-bit pre-installed with licence certificate

OptiPlex 790 Mini Tower Desktop

The Dell OptiPlex 790 is a Mini Tower desktop computer built for student and home-office use. It ships new with a 64-bit quad-core Intel Core i5-2400 processor running at 3.10 GHz, 16 GB of DDR3 memory and a 1 TB 3.5-inch SATA hard drive. Windows 10 Pro 64-bit is pre-installed with a Certificate of Authenticity. A DVD±RW drive, USB keyboard and USB mouse are included in the box.

Who this suits and who it does not

This system suits buyers who need a ready-to-use desktop for everyday office tasks, web browsing and video playback. Integrated Intel HD Graphics 2000 handles basic display output only, so users who require discrete graphics performance for gaming or GPU-accelerated workloads should look elsewhere. All four DIMM slots are populated, leaving no room for memory expansion beyond the installed 16 GB.

Deciding specification — 16 GB DDR3 limit

The motherboard supports a maximum of 16 GB of DDR3 memory across four 240-pin slots and every slot is already filled with a 4 GB module. This fixed ceiling determines whether the computer can meet your multitasking needs or if a platform with higher memory capacity is required.

How it compares

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

Price $216.99
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 1000 GB Hard Drive
SSD storageNo
Hard drive1 TB
Disc driveDVD±RW Drive
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

Should I choose 4, 8, or 16 GB of DDR3 for the OptiPlex 790?

This unit ships with 16 GB DDR3 installed across four slots, reaching the 16 GB maximum the board supports. No further memory can be added.

What does the 3.10 GHz i5-2400 actually deliver in daily use?

The second-generation quad-core runs at 3.10 GHz base with a 3.30 GHz turbo, handling office apps, web browsing and 1080p video smoothly within its 64-bit architecture.

How does the SATA interface limit the 1 TB hard drive?

The 3.5-inch 1000 GB drive connects via SATA, capping sequential throughput at the bus limit and making boot and load times slower than an SSD would be.

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