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Small black mini desktop cube on a plain surface

MSI

MSI Cubi 5 Professional Mini Desktop i3-1215U 16GB 256GB

SKU CH-E5D3-H3DAH

A compact desktop with a 6-core i3-1215U, 16 GB DDR4, 256 GB PCIe SSD, Thunderbolt 4, dual LAN and Wi-Fi 6, ready for three 4K displays

  • TypeStudent / Home Office
  • Form FactorMini Tower
  • UsageWork / Business
  • ColorBlack
  • Power Supply65W
  • Operating SystemWindows 11 Pro

Sizename 16GB RAM · 256GB SSD

  • 16 GB DDR4 memory keeps multitasking smooth across many browser tabs and apps
  • 256 GB PCIe SSD cuts boot time and speeds up file transfers
  • Intel Core i3-1215U with 6 cores and 8 threads reaches 4.4 GHz turbo for responsive everyday workloads
  • Thunderbolt 4, HDMI and DisplayPort 1.4 drive three 4K monitors from one compact chassis
  • Windows 11 Pro adds BitLocker encryption, Remote Desktop and advanced management for business use

Compact workstation for office and home use

The MSI Cubi 5 Professional is a mini desktop built around an Intel Core i3-1215U processor with six cores and eight threads. It ships with 16GB of DDR4 3200 memory and a 256GB PCIe SSD, running Windows 11 Pro out of the box. The system targets everyday productivity, remote work and multi-monitor setups in tight spaces.

Thermals and power in typical use

A 65W power supply feeds the whole platform, so sustained draw stays modest during document editing, video calls and web browsing. Two RJ45 ports and Wi-Fi 6 handle wired and wireless networking without adding noticeable heat. The compact chassis relies on passive airflow paths rather than large fans, keeping acoustic output low for desk-side placement.

Behaviour under sustained load

The processor base frequency sits at 3.3 GHz and can reach 4.4 GHz on turbo, but the small enclosure limits how long peak speeds hold during continuous heavy workloads such as large compiles or extended encoding. Memory can be expanded to 64GB across two slots if multitasking pressure grows, while Thunderbolt 4 and DisplayPort 1.4 drive up to three 4K displays without discrete graphics.

Highlights

  • 16 GB DDR4 memory keeps multitasking smooth across many browser tabs and apps
  • 256 GB PCIe SSD cuts boot time and speeds up file transfers
  • Intel Core i3-1215U with 6 cores and 8 threads reaches 4.4 GHz turbo for responsive everyday workloads
  • Thunderbolt 4, HDMI and DisplayPort 1.4 drive three 4K monitors from one compact chassis
  • Windows 11 Pro adds BitLocker encryption, Remote Desktop and advanced management for business use

Specifications

BrandMSI
SeriesCubi
Model5
TypeStudent / Home Office
Form FactorMini Tower
UsageWork / Business
ColorBlack
Power Supply65W
Operating SystemWindows 11 Pro
CPU TypeIntel Core i3
CPU NameIntel Core i3-1215U
GPU/VGA TypeIntel UHD Graphics
Memory Capacity16GB DDR4
Memory SpeedDDR4 3200
Memory Slot (Total)2
Memory Slot (Available)2
Memory Slots (Available/Total)2 total
Maximum Memory Supported64 GB
SSD256GB PCIe
HDDNo
Optical Drive TypeNo
Screen SizeNo Screen
LAN Speed2.5Gbps
WLAN802.11ax Wireless LAN
BluetoothYes
Front USB3
Front Audio Ports1
Rear USB2
RJ452 port
Dimensions (H x W x D)4.88" x 4.88" x 2.11"
Weight1 Lbs

Other versions of this model

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Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

How do I install the 65 W power adapter and which step do people miss?

Connect the DC jack to the rear of the unit, plug the adapter into mains power, then press the front power button; the step often missed is seating the DC connector fully until it clicks.

What maintenance or replacement will the 16 GB DDR4 memory need later?

The two SODIMM slots support up to 64 GB total, so you can add or replace modules with DDR4 3200 sticks when more capacity is required.

What limit appears first on the Intel Core i3-1215U during sustained workloads?

The 65 W power supply caps total system draw, so the processor will throttle to stay within that thermal envelope under continuous load.

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