MINISFORUM DeskMini UM870 Slim Mini PC - Compact 8K Capable Mini PC

In this review of the MINISFORUM DeskMini UM870 Slim Mini PC the bottom line is simple: this compact barebone system is best for users who need a small, quiet workstation that can drive multiple high-resolution displays and handle everyday productivity or light content creation. It pairs an AMD Ryzen 7 8745H processor with AMD Radeon 780M graphics to deliver noticeably faster general performance than typical small form factor PCs, and the unit's multi-display 8K and 4K outputs make it a standout for multi-monitor desks where space is limited.

Key Features

• Processor: The Ryzen 7 8745H delivers strong multicore performance suitable for multitasking, light gaming, compiling and image editing without stalling workflows.
• Graphics: Integrated AMD Radeon 780M graphics provide robust GPU acceleration for media playback, casual 1080p gaming and GPU-accelerated creative tasks on a compact system.
• Display outputs: Three independent video outputs including HDMI 2.1, USB4 and DisplayPort let you run up to 8K@60Hz or multiple 4K displays for expansive desktop space.
• Networking: Built-in 2.5G LAN plus WiFi 6E and Bluetooth 5.2 give the UM870 stable, low-latency wired and wireless connections for streaming and remote work.
• Expandability: Two DDR5 SODIMM slots and dual PCIe 4.0 M.2 slots allow straightforward memory and storage upgrades to support heavier workloads over time.
• Connectivity: A mix of USB4, USB3.2 and USB2.0 ports plus a 3.5mm audio jack makes connecting peripherals and headsets convenient for desktop setups.

Who It's For

The UM870 is aimed at users who want a space-saving desktop that does not compromise on real-world performance: remote workers, media consumers who need 4K or 8K output, and hobbyist creators who edit photos or handle light video work. Its quiet operation and solid build quality make it practical for a home office or small studio where noise and footprint matter.

It is not the right choice for buyers who require a fully configured out-of-the-box system with storage and RAM included, or for enthusiasts seeking top-end discrete GPU gaming performance; this is a barebone small form factor that expects upgrades and realistic expectations for AAA gaming.

Pros & Cons

Pros

• Compact chassis with solid build quality that fits into cramped desks and media cabinets.
• Strong CPU and AMD Radeon 780M graphics for smooth everyday productivity and casual gaming.
• Multiple high-resolution display outputs, including 8K@60Hz support, expand workspace without a large tower.
• Good connectivity and upgrade paths via DDR5 and PCIe 4.0 M.2 slots.

Cons

• As a barebone version, RAM and M.2 storage are not included so initial setup requires extra parts and installation.
• Some users report mixed installation experiences and rare fan issues, so occasional hands-on troubleshooting may be needed.

Specifications

Brand	MINISFORUM
Processor	AMD Ryzen 7 8745H (8C/16T, up to 4.9GHz)
Graphics	AMD Radeon 780M (RDNA 3)
Display Outputs	HDMI 2.1, USB4 (8K@60Hz), DisplayPort 1.4 (4K@60Hz)
Networking	2.5G RJ45, WiFi 6E, Bluetooth 5.2
Memory & Storage	2x DDR5 SODIMM slots; 2x M.2 2280 PCIe 4.0 SSD slots
Ports	USB4, 2x USB3.2, 2x USB2.0, 3.5mm audio jack

Our Verdict

The UM870 Slim is a strong small form factor pick for users who need a compact, quiet desktop that can drive multiple high-resolution displays and handle everyday creative or productivity tasks. It represents good value if you are willing to add RAM and storage, offering capable integrated Radeon 780M graphics and modern connectivity without the bulk of a tower.

Frequently Asked Questions

Does the UM870 include RAM and storage?
Answer. The barebone version ships without RAM or M.2 SSDs installed, so you will need to add DDR5 SODIMMs and PCIe 4.0 M.2 storage to boot and use the PC.

Can it run multiple high-resolution monitors?
Answer. Yes; the system supports three independent outputs including HDMI 2.1 and USB4 for up to 8K@60Hz and a DisplayPort for 4K@60Hz, enabling multi-monitor setups.

Is it suitable for gaming?
Answer. It handles 1080p and casual gaming well thanks to Radeon 780M, but it is not a substitute for a desktop with a discrete high-end GPU for demanding titles.