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

DELL

DELL OptiPlex 790 Mini Tower i7-2600 3.40GHz 8GB DDR3 256GB SSD 1TB HDD

SKU CH-T7PQ-5XXTJ

A quad-core desktop with 8 GB DDR3, 256 GB SSD and 1 TB HDD running 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 at 3.40 GHz handles multi-tasking smoothly
  • 256 GB SSD plus 1 TB hard drive gives fast boot and large storage
  • 8 GB DDR3 memory supports everyday workloads
  • Windows 10 Pro 64-bit pre-installed with Certificate of Authenticity
  • DVD±RW drive and Gigabit Ethernet for discs and wired networking

Dell OptiPlex 790 Mini Tower

This Dell OptiPlex 790 Mini Tower desktop computer is built for home office and student workloads. It ships new with an Intel 2nd Gen i7-2600 quad-core processor running at 3.40 GHz, 8 GB of DDR3 memory and a dual-drive layout of a 256 GB SSD plus a 1 TB hard drive. Windows 10 Pro 64-bit is pre-installed with a Certificate of Authenticity. A USB keyboard and mouse are included in the box.

265 W power supply and thermals

The system draws power from a 265 W supply while the integrated Intel HD Graphics 2000 and DDR3 memory keep heat output modest during typical office tasks. A DVD±RW drive and Gigabit Ethernet port add no meaningful thermal load. The USB wireless dongle and integrated sound card operate within the same low-power envelope, so fan noise stays unobtrusive for everyday use.

Sustained load behaviour

Under continuous multi-threaded work the i7-2600 can reach 3.90 GHz turbo speeds across its four cores and eight threads, but the 265 W unit limits how long peak frequency holds before throttling. The 8 GB DDR3 ceiling and mechanical hard drive may become bottlenecks for prolonged heavy workloads. Buyers who need more memory headroom or a second graphics card should look elsewhere.

Ciri-ciri utama

  • Quad-core Intel i7-2600 at 3.40 GHz handles multi-tasking smoothly
  • 256 GB SSD plus 1 TB hard drive gives fast boot and large storage
  • 8 GB DDR3 memory supports everyday workloads
  • Windows 10 Pro 64-bit pre-installed with Certificate of Authenticity
  • DVD±RW drive and Gigabit Ethernet for discs and wired networking

Spesifikasi

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" 256 GB Solid State + 3.5" 1TB Hard Drive
Optical DriveDVD±RW Drive
GraphicsIntel HD Graphics 2000
AudioSound card - Integrated
EthernetGigabit Ethernet
Wireless CardUSB Dongle
Power Supply265W
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
SSD256GB
HDD1TB
HDD InterfaceSATA
Storage Spec2.5" 256 GB Solid State + 3.5" 1TB 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

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How do I add more DDR3 memory to the OptiPlex 790 Mini Tower and which slot mistake should I avoid?

Open the case, locate the four 240-pin DIMM slots and insert modules until the retention clips click; the common error is leaving a gap between modules instead of populating matched-channel pairs first.

Which drive will likely need replacement first, the 256 GB SSD or the 1 TB hard drive?

The 3.5-inch 1 TB mechanical hard drive has moving platters and typically fails before the solid-state drive, so plan to swap it after several years of heavy use.

What power limit caps the CPU and GPU during long workloads?

The 265 W power supply restricts total system draw, so sustained Turbo Boost up to 3.90 GHz and integrated graphics load will throttle once combined demand approaches that ceiling.

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