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Small black Dell OptiPlex 3090 Micro desktop, square compact chassis, matte finish

DELL

DELL OptiPlex 3090 Micro PC i5-10500T 16GB 256GB Windows 11 Pro

SKU CH-DDAA-7PTB9

Micro desktop with Intel Core i5-10500T, 16GB DDR4, 256GB SSD and Windows 11 Pro for compact office productivity

  • CPU modelIntel Core i5-10500T
  • RAM capacity16 GB DDR4
  • SSD storage256 GB
  • GraphicsIntel UHD Graphics 630
  • Operating systemWindows 11 Pro
  • Form factorMini PC
  • Compact micro form factor fits tight workspaces
  • Intel Core i5-10500T reaches 3.80 GHz turbo for responsive multitasking
  • 16 GB DDR4 memory handles everyday workloads smoothly
  • 256 GB SSD provides fast boot and application loading
  • Windows 11 Pro delivers built-in security and management features

Micro form factor desktop

The Dell OptiPlex 3090 Micro is a compact desktop computer built around an Intel Core i5-10500T processor with 6 cores and 12 threads. It ships with 16GB of DDR4 memory and a 256GB SSD, running Windows 11 Pro out of the box. Integrated Intel UHD Graphics 630 handles display output for everyday office tasks. This mini PC suits home offices, students and business users needing a small, quiet system for standard productivity.

Upgrading from older office PCs

The 10th generation Core i5 moves from a 2.30 GHz base frequency up to 3.80 GHz turbo, supported by 12 MB of Intel Smart Cache. The jump is worth it when replacing ageing towers that struggle with modern multitasking or slow boot drives. Buyers who need discrete graphics performance, larger internal storage bays or extensive PCIe expansion will not find those capabilities in this micro chassis.

Simple setup with limited internal access

Windows 11 Pro is pre-installed and a wireless keyboard and mouse are included, so the system is ready to use after connecting power and a display. The micro form factor uses an external power adapter, reducing cable clutter on the desk. Internal upgrades are restricted by the compact layout; adding memory or storage typically requires removing the chassis cover and working in tight confines.

How it compares

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

Price $259.99
Cheaper than about 79% of the 14,711 comparable items (median $494.99).
RAM capacity 16 GB DDR4
Typical for this category: the median of 13,125 items is 16 GB.
SSD storage 256 GB
Lower than about 80% of the 11,342 comparable items (median 512 GB).

Specifications

Product
Product typeDesktop PC
Processor
CPU modelIntel Core i5-10500T
Memory
RAM capacity16 GB DDR4
Storage
SSD storage256 GB
Graphics
GraphicsIntel UHD Graphics 630
Size & build
Form factorMini PC
Software
Operating systemWindows 11 Pro

Questions about this item

What are the physical dimensions and mounting requirements for the Dell OptiPlex 3090 Micro?

The Dell OptiPlex 3090 Micro uses a Micro Form Factor chassis designed for tight workspaces. It supports VESA mounting behind compatible monitors or can be placed horizontally on a desk.

How do I install the wireless keyboard and mouse included with the OptiPlex 3090, and what step is commonly missed?

Insert the unified USB receiver into any front or rear USB port. The step often missed is switching on the keyboard and mouse using their individual power buttons before pairing.

When will the 256GB SSD or 16GB DDR4 memory need replacement in this OptiPlex 3090?

The 256GB SSD and 16GB DDR4 RAM are solid-state components with no moving parts. They typically last the system's lifespan unless capacity or performance demands increase significantly.

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