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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 8GB DDR3 128GB SSD Windows 10 Pro

SKU CH-SBD0-VWR9N

Mini tower desktop with a quad-core Intel i5-2400 at 3.10GHz, 8GB DDR3, 128GB SSD, DVD±RW and Windows 10 Pro

  • Screen sizeNo Screen
  • ProcessorIntel Core i5 2nd Gen
  • Memory size8 GB DDR3 Desktop RAM
  • Storage drive128 GB 2.5 in Solid State Hard Drive ( SSD)
  • GraphicsIntel HD Graphics 2000
  • ChipsetIntel Q67

Memory Capacity 8GB DDR3

  • Quad-core Intel i5-2400 at 3.10 GHz handles everyday tasks
  • 8 GB DDR3 memory supports smooth multitasking
  • 128 GB 2.5" SSD speeds up boot and load times
  • Windows 10 Pro 64-bit pre-installed with restore media
  • Gigabit Ethernet plus WiFi USB adapter for flexible connectivity

Dell OptiPlex 790 Mini Tower for Home Office

The Dell OptiPlex 790 Mini Tower is a desktop computer built for student and home office use. It runs on an Intel Quad-Core i5-2400 processor operating between 2.9GHz and 3.30GHz with 64-bit architecture. The system includes 8GB of DDR3 RAM across four occupied DIMM slots and a 128GB 2.5-inch SSD for storage. Windows 10 Pro 64-bit is pre-installed with a Certificate of Authenticity.

Thermals Noise and Power in Normal Use

Integrated Intel HD Graphics 2000 handles video output without a discrete graphics card, which helps keep power draw and heat modest during typical productivity tasks. The Mini Tower case provides standard airflow for the included components. A DVD±RW drive and integrated sound card are also fitted. Gigabit Ethernet and a WiFi USB adapter supply wired and wireless network connectivity.

Upgrading from Older Desktops or Limited Storage

This configuration replaces an older hard-drive-based PC where the jump to a 128GB SSD makes boot and application launch noticeably faster. The four memory slots are fully populated at 8GB, so adding more DDR3 requires removing existing modules; the board supports up to 16GB total. Buyers who want more storage or a dedicated graphics card for modern gaming will need a different platform.

How it compares

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

Price $133.99
Cheaper than about 94% of the 14,711 comparable items (median $494.99).
Memory size 8 GB DDR3 Desktop RAM
Lower than about 80% of the 5,840 comparable items (median 16 GB).
RAM capacity 8 GB DDR3
Lower than about 80% 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 i5 2nd Gen
CPUIntel Quad-Core i5 (2.9 GHz-3.3 GHz)
ChipsetIntel Q67
Memory
Memory size8 GB DDR3 Desktop RAM
RAM capacity8 GB DDR3
RAM type and speedDDR3
Memory configuration2 GB x 4
Total memory slots4
Free memory slots0
Memory slots0/4
Max supported RAM16 GB
Storage
Storage drive128 GB 2.5 in Solid State Hard Drive ( SSD)
Hard driveNo
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

How do I install extra memory in the OptiPlex 790, and what step do people often miss?

Open the Mini Tower case, release the clips on all four 240-pin DIMM slots, align the notch on each DDR3 module, and press firmly until both clips snap shut; the step many miss is removing every existing 2 GB stick first because all four slots are already populated.

Which components in this OptiPlex 790 are most likely to need replacement after a few years?

The 128 GB 2.5" SSD and the DVD±RW optical drive are the main wear items; the DDR3 memory and Intel Q67 motherboard have no moving parts, while the included WiFi USB adapter can be swapped easily if the wireless signal degrades.

What is the first limit reached when the i5-2400 runs at full load for a long period?

The CPU tops out at 3.30 GHz with four cores and the integrated Intel HD Graphics 2000 shares system memory, so sustained heavy compute or video tasks hit the processor's maximum frequency and shared graphics memory ceiling before any other bottleneck appears.

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