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Small black rectangular mini PC with front ports visible

DELL

DELL OptiPlex 3090 Micro desktop PC i5 10500T 8GB 256GB NVMe

SKU CH-DCQS-ZP3S7

Tiny business desktop with a six-core i5, 8 GB DDR4, 256 GB NVMe storage and Windows 11 Pro

  • TypeBusiness Desktops & Workstations
  • Form FactorMini PC
  • UsageBusiness
  • ColorBlack
  • AI FeaturesCopilot+ PC
  • Processori5 10500T
  • Six-core 10th Gen i5 handles multitasking smoothly
  • 8 GB DDR4 memory keeps everyday apps responsive
  • 256 GB NVMe SSD boots Windows 11 Pro fast
  • Micro chassis fits behind a monitor or on a shelf
  • Dual DisplayPort outputs drive two modern screens

Compact business desktop for office tasks

The OptiPlex 3090 Micro is a new mini PC built around a 10th generation Intel Core i5 10500T processor with six cores and twelve threads running at 2.3 GHz. It ships with 8GB of DDR4 memory and a 256GB NVMe SSD, plus Windows 11 Pro pre-installed. Integrated Intel UHD 630 graphics drive two DisplayPort outputs, while Gigabit Ethernet and Wi-Fi handle connectivity.

Suits space-constrained offices.

This desktop fits workers who need a quiet, small footprint machine for productivity apps, web browsing and video calls. The 35 W processor keeps heat low in tight spaces. Buyers who want more storage, additional memory slots, discrete graphics or legacy VGA and DVI ports without adapters should look at something else.

35 W six-core CPU defines thermal

The i5 10500T operates at a 35 W base power, which dictates the cooling capacity required in the Micro chassis and sets the sustained performance level for business workloads. This single figure determines whether the system meets your power and thermal constraints.

Highlights

  • Six-core 10th Gen i5 handles multitasking smoothly
  • 8 GB DDR4 memory keeps everyday apps responsive
  • 256 GB NVMe SSD boots Windows 11 Pro fast
  • Micro chassis fits behind a monitor or on a shelf
  • Dual DisplayPort outputs drive two modern screens

Specifications

BrandDELL
SeriesOptiPlex
Model3090
TypeBusiness Desktops & Workstations
Form FactorMini PC
UsageBusiness
ColorBlack
AI FeaturesCopilot+ PC
Processori5 10500T
Processor Main Features64 bit 6-Core Processor
Cache Per Processor12 MB L3 Cache
Memory8GB DDR4
Storage256GB SSD
GraphicsIntel UHD 630
EthernetGigabit Ethernet
Wireless CardNone
MonitorMonitor not included
Cooling SystemAir Cooling
SpeakerSpeaker Set Not Included
KeyboardKeyboard Not Included
MouseMouse Not Included
Operating SystemWindows 11 Pro
Windows 11Ready
Software IncludedFresh install and activated Windows 11 with zero bloatware. Windows 11 will be activated via your unit's unique digital license and ready to go right out of the box.
Special FeaturesPCI Express NVMe
External I/O Ports1x Ethernet
CPU TypeIntel Core i5 10th Gen
CPU NameIntel Core i5-10500T
L3 Cache Per CPU12 MB
CPU Main Features64 bit 6-Core Processor
GPU/VGA TypeIntel UHD Graphics 630
Graphics InterfaceIntegrated video
Memory Capacity8GB DDR4
Memory Slot (Total)2
SSD256GB NVMe
Storage SpecPCI Express NVMe
Optical Drive TypeNo
Optical Drive 2 TypeNone
Screen SizeNo Screen
TouchscreenNo
Display FeatureDual Monitor Supported via Display Port
LAN ChipsetIntegrated
LAN Speed10/100/1000Mbps
WLAN802.11ac Wireless LAN
WiFi GenerationWi-Fi 6
BluetoothYes
Front USB1
Front Audio Ports2
Video Ports2 Display Port
Rear USB4
RJ451 port
Storage ControllerPCI Express NVMe
Package ContentsDesktop Computer preloaded with Windows and OEM wattage appropriate AC adapter.
Consumer AlertPreviously Used, Seller Refurbished. Desktop may show minor signs of wear but will be in good condition.

Questions about this item

How do I install the 256GB NVMe drive in the 3090 Micro and what step is often missed?

The M.2 slot sits under the bottom cover secured by a single captive screw; the step most people skip is inserting the drive at the correct angle before pressing it down and tightening the retaining screw.

What maintenance or replacement will the 8GB DDR4 memory need later?

The two SODIMM slots support up to 64GB total; if you need more capacity you add or swap DDR4 modules — no other memory type fits.

What limit appears first on the i5 10500T during sustained 35W workloads?

The 35W power envelope and the compact air-cooling system cause the CPU to hit its thermal ceiling before the 12MB L3 cache or six cores become the bottleneck.

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