MINISFORUM DeskMini UM690L Slim Mini PC - Compact 8K Ready Mini PC

In this review of the MINISFORUM DeskMini UM690L Slim Mini PC, the bottom line is straightforward: this tiny desktop is for users who need strong multi-threaded performance and multi-monitor output in a compact chassis. Powered by an AMD Ryzen 9 6900HX and equipped with 32GB LPDDR5 plus a 1TB PCIe4.0 SSD, the UM690L handles everyday productivity, light gaming and creative tasks with ease while keeping a very small footprint. The single biggest reason to buy is the combination of a high-end mobile Ryzen CPU and modern connectivity in a small form factor.

Key Features

• Ryzen 9 6900HX Processor: Delivers 6 cores and 12 threads for smooth multitasking, editing and light gaming without long waits.
• 32GB LPDDR5 RAM: Large, fast memory that keeps many apps and browser tabs responsive for demanding workflows.
• 1TB PCIe4.0 SSD plus extra slot: A fast 1TB drive is installed and an additional PCIe4.0 M.2 slot allows for storage expansion up to 2TB.
• Multi-display video outputs: HDMI 2.1, USB4 and DisplayPort provide up to three independent displays including 8K@60Hz and 4K@60Hz capability for large desktop spaces.
• Stable networking: Built-in 2.5G LAN with WiFi 6E and Bluetooth 5.2 gives fast wired and wireless connections for low-latency work and media streaming.

Who It's For

The UM690L is aimed at professionals and power users who need a compact desktop that can drive multiple high-resolution displays and sustain CPU-heavy tasks like code compilation, photo editing and streaming. It is also attractive to content consumers who want quiet operation and fast boot speeds from a small system on a desk or media cabinet.

It is less suited for users who need heavy discrete-GPU gaming performance or those who require field upgrades to RAM, since the 32GB LPDDR5 is not upgradable. Buyers who need a full tower with multiple PCIe cards or dedicated high-end GPU options should look elsewhere.

Pros & Cons

Pros

• High-end Ryzen 9 6900HX gives strong CPU performance in a tiny chassis.
• Excellent connectivity with HDMI2.1, USB4, DP and 2.5G LAN for modern peripherals and multi-monitor setups.
• Fast storage out of the box with 1TB PCIe4.0 SSD and extra expansion slot for more capacity.
• Compact size and generally quiet operation make it easy to place in home offices and living rooms.

Cons

• LPDDR5 32GB RAM is fixed and cannot be upgraded, which limits long-term memory expansion options.
• Some users report mixed cooling performance; the unit can run hot under sustained heavy load.

Specifications

Processor	AMD Ryzen 9 6900HX (6C/12T up to 4.9GHz)
Memory	32GB LPDDR5 (not upgradable)
Storage	1TB PCIe4.0 SSD installed; additional M.2 PCIe4.0 slot available
Graphics	AMD Radeon 680M integrated graphics
Video Outputs	HDMI 2.1, USB4 (8K@60Hz), DisplayPort 1.4 (4K@60Hz)
Networking	2.5G RJ45 LAN, WiFi 6E, Bluetooth 5.2
Ports	2x USB3.2, 2x USB2.0, 1x USB4, 3.5mm audio jack

Our Verdict

The MINISFORUM DeskMini UM690L is a compelling compact desktop for users who want strong CPU performance, modern I/O and multi-monitor capability without a large case. It offers excellent value for productivity, media and light gaming, but prospective buyers should accept fixed RAM and monitor reported heat under heavy continuous load. For those priorities it is a smart small-form-factor choice that balances power and size well.

Frequently Asked Questions

Can the RAM be upgraded?
Answer. The 32GB LPDDR5 memory in this model is fixed and cannot be upgraded.

How many displays can be used at once?
Answer. You can run three independent displays using HDMI2.1, USB4 and DisplayPort concurrently, including 8K and 4K outputs.

Is there room to add more storage?
Answer. Yes, the unit includes one installed 1TB PCIe4.0 SSD and an additional M.2 PCIe4.0 slot for expansion up to 2TB.