We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black and silver small form factor desktop tower with DVD-RW slot and front ports

DELL

DELL OptiPlex 790 SFF desktop PC i5 4 GB 128 GB SSD Windows 10 Pro

SKU CH-FK7D-7VXK8

Small-form-factor desktop with a quad-core Intel i5, 4 GB DDR3 memory and a 128 GB SSD for everyday office tasks

  • Screen sizeNo Screen
  • ProcessorIntel Core i5 2nd Gen
  • Memory size4 GB DDR3 Desktop RAM
  • Storage drive128 GB 2.5 in Solid State Hard Drive ( SSD)
  • GraphicsIntel HD Graphics 2000
  • ChipsetIntel Q65
  • Quad-core Intel i5 handles multitasking at up to 3.30 GHz
  • 128 GB 2.5" SSD boots Windows 10 Pro in seconds
  • 4 GB DDR3 RAM supports everyday productivity
  • Gigabit Ethernet provides fast wired network access
  • DVD-RW drive reads and writes discs for legacy media

Compact desktop for everyday tasks

The Dell OptiPlex 790 SFF is a small-form-factor PC built around a quad-core Intel i5 running at 2.9 GHz to 3.30 GHz. It ships with 4 GB of DDR3 memory and a 128 GB 2.5-inch SSD. Windows 10 Pro 64-bit is pre-installed and activated, so the system is ready for office applications, web browsing and light multitasking straight out of the box.

Thermals and power in daily use

The SFF chassis uses the stock Intel cooler and a single rear exhaust fan to move air across the Q65 Express chipset and integrated Intel HD Graphics 2000. Under typical office loads the processor stays within its rated turbo range of 2.90 GHz to 3.10 GHz without audible fan ramping. Power draw remains modest because the platform lacks a discrete graphics card and the SSD eliminates mechanical drive spin-up.

Included peripherals and expandability

A USB keyboard and USB mouse are bundled, removing the need for separate input purchases. The DVD-RW drive reads and writes CDs and DVDs for legacy media or software installation. Integrated Gigabit Ethernet provides wired networking, while Wi-Fi and Bluetooth are also present. Two DIMM slots support up to 16 GB of DDR3 if more memory is required later.

How it compares

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

Price $305.99
Cheaper than about 70% 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
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 Q65
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 drive128 GB 2.5 in Solid State Hard Drive ( SSD)
Hard driveNo
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
Ethernet controllerIntegrated
Wi-Fi802.11a/b/g/n Wireless LAN
Ports & slots
Front USB ports4
Front audio jacks2
Video connectors1 VGA, 2 Display Ports
Rear USB ports6
Ethernet port1 port
Rear audio jacks1x Headphone, 1x Microphone, 1x Line In
Size & build
Form factorDIMM 240-pin
ChassisSmall Form Factor (SFF)
Overall dimensions11.4 × 3.7 × 12.3
Product weight14 lb (6.35 kg)
In the box
Included monitorNot included
Bundled mouseUSB
Pointing deviceUSB Mouse
Software
Operating systemWindows 10 Pro
Pre-installed softwareWindows 10 Pro Restore Media
More details
KeyboardUSB
Keyboard typeUSB Keyboard

Questions about this item

How do I install DDR3 memory in the 240-pin DIMM slots, and which step is often missed?

Power off, open the SFF case, align the notch on each DDR3 module with the 240-pin slot, press firmly until both side clips click, then verify 4 GB or up to 16 GB shows in BIOS.

Which component will likely need replacement first during long-term use?

The 2.5-inch 128 GB SSD has a finite write endurance; plan to replace it if capacity fills or SMART warnings appear after heavy workloads.

What thermal or power limit appears first when the Intel Quad-Core i5 runs at 3.30 GHz under sustained load?

The small-form-factor chassis and 240-watt power supply restrict continuous turbo, so the CPU throttles to stay within the cooling and power envelope.

More in Tower & Compact Desktop PCs

Similar items