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Small black desktop tower, micro form factor, matte finish

DELL

DELL OptiPlex 3090 Micro i3-10100T 8GB DDR4 500GB HDD Windows 11 Pro desktop PC

SKU CH-03N0-YPGZX

Micro desktop with an Intel Core i3-10100T processor, 8 GB DDR4 memory, 500 GB HDD, Intel UHD Graphics, Wi-Fi 6 and Bluetooth 5.1 running Windows 11 Pro

  • Screen sizeNo Screen
  • ProcessorIntel Core i3
  • Memory size8 GB DDR4
  • GraphicsIntel UHD Graphics
  • CPU model3 GHz
  • Hard drive500 GB
  • Compact micro form factor saves desk space
  • Intel Core i3-10100T quad-core up to 3.80GHz handles everyday tasks
  • 8GB DDR4 3200MHz memory supports smooth multitasking
  • Wi-Fi 6 and Bluetooth 5.1 give fast wireless connectivity
  • Windows 11 Pro pre-installed for professional features

Micro form-factor desktop for home and student use

The Dell OptiPlex 3090 Micro fits into tight spaces while delivering a 10th Generation Intel Core i3-10100T quad-core processor that reaches 3.80 GHz. Eight gigabytes of DDR4 3200 memory and a 500 GB hard drive provide enough capacity for everyday documents, web browsing and video calls. Windows 11 Pro is pre-installed and the system includes a USB keyboard, Intel Wi-Fi 6 AX201 and Bluetooth 5.1 connectivity.

Upgrade from an older micro tower or all-in-one

Replacing a previous-generation micro desktop with this 35 W platform gives a noticeable lift in single-thread responsiveness and wireless speed thanks to dual-band Wi-Fi 6. The jump is worth it when your current machine struggles with multiple browser tabs, video conferencing or slow boot times on a mechanical drive. Integrated Intel UHD Graphics handles standard office workloads and 4K playback without a discrete card.

Check power and peripheral requirements before

The unit ships with a 65 W adapter rated up to 87 % efficiency, so verify that your desk outlet or power strip can accommodate the brick. No monitor is included; ensure you have a display with HDMI or DisplayPort input and a suitable cable. The chassis uses a single 8 GB DDR4 module, leaving one slot open if you plan to add more memory later.

How it compares

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

Price $260.99
Cheaper than about 79% of the 14,711 comparable items (median $494.99).
Memory size 8 GB DDR4
Lower than about 80% of the 5,840 comparable items (median 16 GB).
RAM type and speed DDR4 3200
Higher than about 60% of the 3,052 comparable items (median 2,933).

Specifications

Product
Brand nameDELL
Model nameOptiPlex 3090
Part numberOPT0146779-R0020589-SA
Product typeStudent / Home Office
Product colorBlack
Processor
ProcessorIntel Core i3
CPU model3 GHz
CPU socketBlack
Memory
Memory size8 GB DDR4
RAM type and speedDDR4 3200
Memory configuration8
Storage
Hard drive500 GB
Optical driveNo
Disc drive detailsNo
Display
Screen sizeNo Screen
Graphics
GraphicsIntel UHD Graphics
Audio & video
SoundUniversal Audio Jack
Connectivity
Network speedNo
Wi-Fi802.11ax Wireless LAN
Bluetooth support5.1
Ports & slots
Video connectorsOptional Port: VGA/DP1.4/HDMI 2.0
Rear audio jacksUniversal Audio Jack
In the box
Included monitorNot included
Pointing deviceUSB Mouse
Software
Operating systemWindows 11 Pro
More details
KeyboardUSB keyboard
Keyboard typeUSB Keyboard

Questions about this item

What are the physical dimensions of the OptiPlex 3090 Micro chassis?

The OptiPlex 3090 Micro uses a micro form factor chassis designed for compact spaces. It supports VESA mounting behind compatible monitors or can be placed horizontally on a desk with the included stand.

How do I install additional DDR4 memory in this desktop, and which step is commonly missed?

Open the chassis by releasing the latch, insert the DDR4 3200 MHz module into the vacant SODIMM slot at a 45-degree angle, then press down until it clicks. The step often missed is fully seating the module before closing the case.

When will the 500 GB hard drive or the 8 GB DDR4 memory need replacement?

The 500 GB HDD is a mechanical drive that may require replacement after several years of heavy use due to wear. The 8 GB DDR4 module can be upgraded later if more memory is needed for newer applications.

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