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Small black rectangular barebone mini PC, front USB-C and USB-A ports visible

MSI

MSI Cubi 5 12M-086BUS i3-1215U barebone mini PC

SKU CH-1TQ6-WMTM0 MPN Cubi 5 12M-086BUS

A barebone mini PC with a 6-core Intel Core i3-1215U, dual LAN, Wi-Fi 6E, dual Thunderbolt 4 and room for 64 GB of DDR4 memory

  • CPU TypeIntel Core i3-1215U 6C/8T 10MB Cache
  • North BridgeIntel SoC
  • Memory Type SupportedNot Included - Supports 2x DDR4 2666MHz SO-DIMM, up to 64GB
  • Max Memory Supported64GB
  • Other1x 2.5" HDD
  • Channel1x Mic-in / Headphone-out combo N/A
  • Intel Core i3-1215U 6-core 8-thread processor handles multitasking smoothly
  • Supports up to 64 GB DDR4 2666 MHz SO-DIMM memory for heavy workloads
  • WIFI 6E AX 211 delivers fast, low-latency wireless connectivity
  • Dual LAN with 2.5 GbE and Gigabit ports ensures reliable wired networking
  • Thunderbolt 4 USB-C provides 40 Gbps bandwidth for docks and displays

Ready-to-build mini PC with Core i3-1215U

The MSI Cubi 5 12M-086BUS is a barebone mini desktop built around an Intel Core i3-1215U processor with six cores and eight threads. It arrives without memory, storage or an operating system so you can choose the components that match your workload. A 65 W power supply is included in the box.

Suits integrators and home-office users

This unit fits buyers who want a compact x86 platform they can configure with up to 64 GB of DDR4-2666 SO-DIMM memory and a 2.5-inch drive. It is not for users who need a second M.2 slot, discrete graphics or a pre-installed Windows licence.

Dual 2.5 GbE and 1 GbE LAN ports

Network connectivity relies on one Realtek RTL8125BG-CG controller for 2.5 GbE and one RTL8111H for 1 GbE, giving two wired ports in a chassis under one litre. Wireless is handled by a Wi-Fi 6E AX211 module.

Highlights

  • Intel Core i3-1215U 6-core 8-thread processor handles multitasking smoothly
  • Supports up to 64 GB DDR4 2666 MHz SO-DIMM memory for heavy workloads
  • WIFI 6E AX 211 delivers fast, low-latency wireless connectivity
  • Dual LAN with 2.5 GbE and Gigabit ports ensures reliable wired networking
  • Thunderbolt 4 USB-C provides 40 Gbps bandwidth for docks and displays

Specifications

BrandMSI
ModelCubi 5 12M-086BUS
Part NumberCubi 5 12M-086BUS
CPU TypeIntel Core i3-1215U 6C/8T 10MB Cache
North BridgeIntel SoC
Memory Type SupportedNot Included - Supports 2x DDR4 2666MHz SO-DIMM, up to 64GB
Max Memory Supported64GB
Other1x 2.5" HDD
Channel1x Mic-in / Headphone-out combo
N/A
LAN1x Realtek® RTL8111H
1x Realtek® RTL8125BG-CG
Wireless LANWIFI 6E - AX 211
Power Supply65W
FeaturesFront:
1x ThunderBolt4 Type-C
2x USB 3.2 Gen2 Type-A
1x ThunderBolt4 Type-C
2x USB 3.2 Gen2 Type-A
Rear:
2x USB 3.2 Gen2 Type-A
2x USB 3.2 Gen2 Type-A
Shipping weight1.45 kg
Package size254 × 229 × 102 mm

Questions about this item

Will the two DDR4 2666 MHz SO-DIMM slots need a RAM upgrade later?

The board accepts two DDR4 2666 MHz SO-DIMMs up to 64 GB total, so you can add or replace memory whenever your workload demands more capacity.

Does the 15 W TDP on the i3-1215U throttle first under sustained loads?

The processor is rated at 15 W TDP and the 65 W power supply is sized for that envelope, so thermal limits on the CPU package are the first ceiling you will hit during prolonged heavy work.

How loud or hot does the Cubi 5 get when it runs all day?

The 65 W adapter feeds a 15 W TDP chip with dual LAN, WIFI 6E and Thunderbolt 4 active, so the cooling fan stays at low RPM and chassis temperatures remain modest during continuous operation.

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