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Black and silver small-form-factor desktop tower with DVD-RW slot and USB WiFi adapter

DELL

DELL OptiPlex 990 SFF Desktop PC i5 2.9-3.30GHz 8GB DDR3 1TB HDD DVDRW WiFi

SKU CH-H862-07G90

Small form-factor desktop with quad-core Intel i5 at 2.9–3.30 GHz, 8 GB DDR3, 1 TB SATA hard drive, DVD±RW, Wi-Fi USB adapter and Windows 10 Pro

  • TypeStudent / Home Office
  • Form FactorDIMM 240-pin
  • UsageConsumer
  • ColorBlack/Silver
  • ProcessorIntel Quad-Core i5 (2.9GHz-3.30GHz)
  • Processor Main Features64 bit Quad-Core Processor
  • Quad-core Intel i5 handles multi-tasking smoothly
  • 8 GB DDR3 memory supports everyday workloads
  • 1 TB SATA hard drive stores large file collections
  • DVD±RW drive reads and writes optical media
  • Gigabit Ethernet plus Wi-Fi USB adapter connects to networks

Compact business desktop

The Dell OptiPlex 990 SFF is a small-form-factor desktop computer built around an Intel quad-core i5 processor running at 2.9 to 3.30 GHz. It ships with 8 GB of DDR3 memory, a 1000 GB 3.5-inch SATA hard drive and a DVD±RW optical drive. Windows 10 Pro 64-bit is pre-installed and a USB keyboard and mouse are included.

Home office and light administrative work

This system suits buyers who need a ready-to-use PC for web browsing, office applications and video playback in a compact case. Integrated Intel HD Graphics 2000 and the single included WiFi USB adapter handle basic display and wireless needs. Buyers who need discrete graphics performance, faster solid-state storage, more than 8 GB of DDR3 memory, or additional internal drive bays should look elsewhere.

8 GB DDR3 memory limit

The motherboard uses 240-pin DIMM slots for DDR3 modules and the supplier notes a maximum of 16 GB. The installed 8 GB configuration leaves room for one upgrade step within the DDR3 standard. No other memory type is compatible with this platform.

Highlights

  • Quad-core Intel i5 handles multi-tasking smoothly
  • 8 GB DDR3 memory supports everyday workloads
  • 1 TB SATA hard drive stores large file collections
  • DVD±RW drive reads and writes optical media
  • Gigabit Ethernet plus Wi-Fi USB adapter connects to networks

Specifications

BrandDELL
SeriesOptiPlex
Model990
Part Number990
TypeStudent / Home Office
Form FactorDIMM 240-pin
UsageConsumer
ColorBlack/Silver
ProcessorIntel Quad-Core i5 (2.9GHz-3.30GHz)
Processor Main Features64 bit Quad-Core Processor
Memory8 GB DDR3 Desktop RAM
Storage1000 GB (1TB) 3.5" SATA Hard Drive
Optical DriveDVD±RW Drive
GraphicsIntel HD Graphics 2000
AudioSound card - Integrated
EthernetGigabit Ethernet
Wireless CardWiFi USB Adapter
MonitorMonitor not included
CaseSmall Form Facto (SFF)
KeyboardUSB
MouseUSB
Operating SystemWindows 10 Pro
Software IncludedWindows 10 Pro Installed
ChipsetIntel Q67
CPU TypeIntel Core i5 2nd Gen
Installed Qty1
Max Supported Qty1
CPU Socket TypeLGA 1155
CPU Main Features64 bit Quad-Core 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
SSDNo
HDD1TB
HDD InterfaceSATA
Optical Drive TypeDVD±RW
Screen SizeNo Screen
Audio ChipsetIntegrated
LAN ChipsetIntegrated
LAN Speed10/100/1000Mbps
WLAN802.11 Wireless LAN
Front USB4
Front Audio Ports2
Video Ports1 VGA, 1 Display Port
Rear USB6
Rear IEEE 13941 port
RJ451x Headphone, 1x Microphone, 1x Line In
Keyboard TypeUSB Keyboard
Mouse TypeUSB Mouse
Dimensions (H x W x D)11.4 x 3.7 x 12.3
Weight12 Lbs.

Questions about this item

How do I install additional DDR3 memory in the OptiPlex 990 SFF, and which step is often missed?

Open the small form factor case, align the 240-pin DDR3 module with the slot key, press firmly until the retention clips click shut, then verify the new total in BIOS — the step most people skip is fully seating both clips.

What component in this OptiPlex 990 SFF will most likely need replacement first?

The 3.5-inch 1000 GB SATA hard drive is the part with moving parts and the highest wear rate; plan to replace it with another SATA drive when SMART warnings appear.

What thermal limit appears first when the Intel Quad-Core i5 runs at 3.30 GHz continuously in this SFF chassis?

The small form factor case restricts airflow, so the CPU hits its thermal ceiling and throttles below the 3.40 GHz turbo boost frequency during sustained loads.

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