MINISFORUM DeskMini UM690L Slim Mini PC

MINISFORUM DeskMini UM690L Slim Mini PC — image 1
MINISFORUM DeskMini UM690L Slim Mini PC — image 2
MINISFORUM DeskMini UM690L Slim Mini PC — image 3
MINISFORUM DeskMini UM690L Slim Mini PC — image 4
MINISFORUM DeskMini UM690L Slim Mini PC — image 5
MINISFORUM DeskMini UM690L Slim Mini PC — image 6
MINISFORUM DeskMini UM690L Slim Mini PC — image 7
79%
21%
91%
Processing Performance
88%
Multi-Monitor Support
58%
RAM Adequacy & Upgradeability
89%
Storage Speed & Expansion
73%
Integrated Graphics (Radeon 680M)
69%
Thermal Management & Fan Noise
87%
Networking & Connectivity
74%
Port Selection
82%
Build Quality & Form Factor
83%
Out-of-Box Experience
79%
Value for Money
66%
Software & Driver Stability
86%
Media Playback Capability
77%
Portability
More

Overview

The MINISFORUM DeskMini UM690L Slim Mini PC is one of the more capable compact desktops you can buy at this price tier, built around AMD's Ryzen 9 6900HX — a processor that genuinely separates this slim mini PC from the sea of Celeron and entry-level Ryzen 5 machines cluttering the category. Physically, it's understated: a matte black box small enough to mount behind a monitor or tuck behind a TV without a second thought. Weighing around three pounds and measuring roughly 7 by 6 by 4 inches, the build feels solid rather than cheap. Just set realistic expectations upfront — this compact desktop excels at productivity and light creative work, not replacing a dedicated GPU workstation.

Features & Benefits

The Ryzen 9 6900HX runs six cores and twelve threads up to 4.9GHz, which means juggling thirty browser tabs, a Zoom call, and a Lightroom export simultaneously is completely manageable. The triple display setup is a genuine highlight — HDMI 2.1, DisplayPort 1.4, and USB4 can each drive a separate monitor, making the UM690L surprisingly capable as a multi-screen workstation. Storage is fast: the PCIe 4.0 SSD loads apps near-instantly, and a second M.2 slot lets you expand later. The 16GB of LPDDR5 RAM is soldered and non-upgradeable, so what you buy is what you keep — worth knowing before committing. Networking rounds out with WiFi 6E and 2.5G Ethernet for reliable, high-bandwidth connections.

Best For

The UM690L makes most sense for home office workers who want to drive two or three monitors without a tower eating up desk space. It's also a strong pick for students who need a machine that handles coding environments, video conferencing, and research without breaking stride. Media room enthusiasts will appreciate 8K-capable output over HDMI or USB4 alongside clean 4K playback for streaming and local files. Those running digital signage or kiosk setups will value the compact, cable-tidy footprint. If you're coming from an aging Intel NUC or a first-generation Ryzen mini PC, the performance jump is real and noticeable — just don't expect it to run demanding AAA titles at high settings.

User Feedback

Buyers tend to highlight two things most often: how quietly this slim mini PC runs during everyday tasks, and how fast the SSD feels right out of the box. The included HDMI cable and plug-and-play OS-ready setup also earn consistent praise. On the other side, the soldered RAM draws real criticism — users who later want 32GB for heavier workloads have nowhere to go. Thermal management holds up well under moderate loads, but sustained rendering or compilation sessions can push the fans to an audible level. A smaller number of buyers have flagged occasional driver quirks on the AMD platform under Windows, though most report these resolve with a straightforward update.

#Minis
#Desktops
#Computers & Tablets
#Computers & Accessories
#Electronics

Pros

  • The Ryzen 9 6900HX offers genuine six-core performance that breezes through multitasking and productivity workloads.
  • Triple display output via HDMI 2.1, DisplayPort, and USB4 makes the UM690L a practical multi-monitor desktop replacement.
  • The PCIe 4.0 SSD loads apps and files at speeds that feel snappy in everyday use.
  • WiFi 6E and 2.5G Ethernet provide fast, reliable networking well suited for home offices and content uploading.
  • A secondary M.2 slot lets you expand storage up to 2TB without opening a complicated chassis.
  • Buyers consistently report near-silent operation during typical office and browsing tasks.
  • The out-of-box setup is straightforward, and the included HDMI cable is a small but appreciated touch.
  • The Radeon 680M handles hardware-accelerated video playback and casual gaming without needing any external GPU.
  • At roughly three pounds and under seven inches wide, it fits practically anywhere on or behind a desk.

Cons

  • RAM is soldered and capped at 16GB, making this compact desktop a poor long-term choice for memory-intensive workflows.
  • No operating system is included, adding setup time and potential cost for buyers who need a Windows license.
  • Fan noise becomes clearly noticeable during sustained CPU-heavy tasks like rendering or large file compression.
  • The Radeon 680M cannot handle modern AAA games at high settings, so gamers will need to look elsewhere.
  • USB 2.0 ports on the I/O panel feel dated alongside otherwise modern connectivity options.
  • No discrete GPU slot means there is no upgrade path for users whose graphics needs grow over time.
  • AMD platform driver quirks on Windows have been reported by a minority of buyers, requiring manual troubleshooting.
  • The included power adapter is US-only, creating an inconvenience for international buyers or frequent travelers.
  • No Thunderbolt certification on the USB4 port may limit compatibility with certain high-end docks and peripherals.

Ratings

The scores below for the MINISFORUM DeskMini UM690L Slim Mini PC were generated by our AI engine after analyzing thousands of verified buyer reviews from global markets, with spam, incentivized feedback, and bot-generated reviews actively filtered out. Each category reflects the honest consensus of real owners — including the frustrations, not just the highlights. Where buyers were divided, the score and commentary reflect that tension directly.

Processing Performance
91%
The Ryzen 9 6900HX consistently impresses users coming from older mini PCs or entry-level compact desktops. Buyers running simultaneous Zoom calls, browser-heavy research, and background file transfers report the system stays responsive without any noticeable slowdown. For a fanless-looking machine this size, the headroom is genuinely surprising.
A small number of power users note that sustained multi-core workloads — particularly long video encodes or large compile jobs — cause the CPU to throttle slightly once thermals build up. It is not a dealbreaker, but professionals pushing the chip continuously for hours should factor this in.
Multi-Monitor Support
88%
Driving three screens simultaneously via HDMI 2.1, DisplayPort 1.4, and USB4 is one of the UM690L's most praised real-world capabilities. Home office users setting up triple-monitor workstations report smooth, stable output across all three displays with no flickering or resolution compromises during daily use.
Some buyers encountered compatibility hiccups when mixing monitors from different manufacturers or using USB4 with certain third-party docks. A handful of users also noted that getting all three outputs active simultaneously required updating drivers manually, which added friction to the initial setup experience.
RAM Adequacy & Upgradeability
58%
42%
For the majority of everyday users — web workers, students, educators, and light creative professionals — 16GB of LPDDR5 is enough to run smoothly day-to-day. The memory speed is fast enough that the system rarely feels starved during typical multitasking scenarios.
The soldered RAM is the single most-discussed complaint across reviews worldwide. Users who later discovered they needed more capacity for virtual machines or heavier workloads had no recourse but to replace the entire unit. This hard ceiling frustrates tech-savvy buyers who expected a more future-proof platform.
Storage Speed & Expansion
89%
The PCIe 4.0 SSD makes a tangible difference in day-to-day use — apps open fast, file transfers feel immediate, and boot times are short. Buyers coming from SATA SSD systems or spinning hard drives consistently highlight the storage speed as one of the best surprises about this compact desktop.
The 1TB base capacity fills up faster than expected for users storing large media libraries or game collections. While the secondary M.2 slot solves this, it requires opening the chassis, which some buyers found fiddlier than expected given the slim form factor.
Integrated Graphics (Radeon 680M)
73%
27%
The Radeon 680M at 2400MHz handles hardware-accelerated video playback, 4K streaming, and esports-tier gaming better than most integrated GPUs in this price range. Users playing Rocket League, older RPGs, or light simulation games report playable frame rates at moderate settings without any external GPU.
Expectations need to be managed carefully here. Users who tried running current AAA titles at medium-to-high settings were disappointed, and the iGPU shares system memory, which slightly reduces the effective RAM headroom. This is integrated graphics doing its best — not a gaming GPU substitute.
Thermal Management & Fan Noise
69%
31%
Under light to moderate workloads — office applications, video calls, media playback — the UM690L runs quietly enough that most users placed it on their desk without concern. The active cooling keeps sustained temperatures in check without the aggressive fan curves seen in some competing mini PCs.
Under prolonged heavy loads, the fan becomes clearly audible — not disruptively loud, but noticeable in a quiet home office or bedroom. Users doing hour-long video renders or continuous compilation work mention that the fan ramp-up is consistent and predictable, though not silent.
Networking & Connectivity
87%
The 2.5G Ethernet port is a standout for NAS users and content creators who transfer large files over a local network. WiFi 6E adds meaningful real-world benefit in congested apartment environments where older WiFi standards struggle, and Bluetooth 5.2 pairs peripherals reliably.
A minority of buyers noted that the WiFi antenna placement inside the compact chassis can reduce signal strength in certain desk configurations — particularly if the unit is mounted behind a large monitor. Ethernet remains the more dependable option for bandwidth-sensitive workflows.
Port Selection
74%
26%
Having a USB4 port alongside USB 3.2 and a 3.5mm audio jack covers the needs of most users without requiring a hub. The USB4 port in particular adds flexibility for connecting high-speed storage, display adapters, or compatible docks in a single cable.
The two USB 2.0 ports feel like a step back given the otherwise modern I/O lineup, and users with multiple high-speed peripherals may find the three fast USB ports insufficient without a hub. There is also no SD card slot, which content creators working with camera footage will notice.
Build Quality & Form Factor
82%
18%
The matte black chassis feels solid for its size and weight, and the compact footprint genuinely impresses users who are used to mid-tower desktops. Several buyers noted that the unit looks professional enough to leave on a visible desk or mount behind a monitor without looking cheap.
A few users found the plastic exterior attracts dust and fingerprints more than expected, and the chassis feels slightly less premium than metal-clad competitors at similar price points. The slim profile also means internal access for storage expansion requires more careful disassembly than a standard mini PC.
Out-of-Box Experience
83%
Buyers consistently appreciated the included HDMI cable and straightforward physical setup. The unit arrives well-packaged, and the hardware is ready to go as soon as an OS is installed — a process most buyers in this segment are comfortable with.
The absence of a pre-installed operating system is a genuine inconvenience for less technical buyers who did not realize they needed a separate Windows license. The included manual is minimal, and driver setup for the AMD platform can require some extra steps compared to Intel-based alternatives.
Value for Money
79%
21%
For users who need a Ryzen 9-class processor, triple display output, and fast networking in a palm-sized box, the UM690L offers a competitive package relative to comparable options. Buyers upgrading from aging NUC-style systems consistently feel the performance-per-dollar ratio justifies the investment.
The non-upgradeable RAM introduces a hidden long-term cost — users who outgrow 16GB must replace the entire unit rather than simply adding a SODIMM. When factoring in a Windows license purchase and potential storage expansion, the total ownership cost climbs noticeably above the base price.
Software & Driver Stability
66%
34%
Once the AMD chipset and graphics drivers are updated to current versions, the majority of users report a stable, reliable experience with no ongoing software issues. The platform works well with mainstream productivity software, creative applications, and communication tools under Windows 11.
Initial driver setup on the AMD platform requires more hands-on attention than some buyers expected. A recurring subset of reviews mentions display flickering, audio device switching quirks, or one-time crashes during first-boot configuration — issues that typically resolve after driver updates but add unwelcome friction.
Media Playback Capability
86%
Hardware-accelerated 4K playback through streaming services and local files runs smoothly, and the HDMI 2.1 port handles high-resolution TV output without compromise. Living room users report that this compact desktop handles their home theater workload quietly and without the clutter of a traditional set-top box.
HDR tone mapping behavior can vary depending on the display and driver version, and some users had to manually configure color output settings to get accurate results on high-end panels. These are solvable issues, but they require a level of technical comfort that casual users may not expect.
Portability
77%
23%
At around three pounds and small enough to fit in a laptop bag, the UM690L is one of the more portable desktop-class machines available. Users who move between office and home setups, or who need a capable machine for temporary on-site deployments, find the size advantage very practical.
The power adapter is US-only in the box, which limits international usability without a separate adapter purchase. The unit also lacks a built-in battery or any protection against accidental power loss, so portable use still requires a reliable power outlet rather than truly mobile operation.

Suitable for:

The MINISFORUM DeskMini UM690L Slim Mini PC is a strong fit for home office workers who need a real desktop processor in a box that barely takes up any space, especially those running two or three monitors at once. Professionals handling spreadsheets, video calls, document editing, and browser-heavy workflows will find the Ryzen 9 6900HX handles all of it without complaint. Students and educators benefit from the portability and processing headroom for coding environments, research tools, and media-rich presentations. If you want a clean living room media setup capable of driving a high-resolution display over HDMI or USB4, the UM690L delivers that without a bulky tower or noisy fan under normal conditions. It also suits IT buyers looking for a compact, reliable kiosk or digital signage node where a small footprint and solid network connectivity matter more than raw GPU power.

Not suitable for:

The MINISFORUM DeskMini UM690L Slim Mini PC is the wrong choice if your workload is likely to grow beyond what 16GB of RAM can handle, because that memory is soldered directly to the board and cannot be swapped or upgraded later. Power users who run virtual machines, large datasets, or memory-hungry creative suites should factor this hard ceiling into their decision before buying. Gamers hoping to run modern AAA titles at high settings will also be disappointed — the integrated Radeon 680M is capable enough for esports and older games, but it is not a substitute for a dedicated GPU. Anyone doing sustained, heavy rendering, video encoding, or compilation work should be aware that the fans become clearly audible under prolonged stress, which may be a concern in quiet environments. Finally, buyers who prefer a machine that ships with an operating system pre-installed should note this compact desktop arrives OS-ready but without a license included.

Specifications

  • Processor: AMD Ryzen 9 6900HX with 6 cores and 12 threads, boosting up to 4.9GHz for demanding multitasking and productivity workloads.
  • RAM: 16GB LPDDR5 memory soldered directly to the board, meaning it cannot be upgraded or replaced after purchase.
  • Storage: 1TB PCIe 4.0 M.2 SSD included, with a secondary M.2 slot available for expansion up to an additional 2TB.
  • Graphics: AMD Radeon 680M integrated GPU running at 2400MHz, supporting hardware-accelerated media playback and light gaming without a discrete card.
  • Display Output: Three simultaneous outputs: HDMI 2.1 at 8K@60Hz, DisplayPort 1.4 at 4K@60Hz, and USB4 at 8K@60Hz.
  • Networking: 2.5G RJ45 Ethernet port paired with WiFi 6E (802.11ax) and Bluetooth 5.2 for fast wired and wireless connectivity.
  • USB Ports: One USB4 port, two USB 3.2 ports, and two USB 2.0 ports provide a range of peripheral and accessory connections.
  • Audio: One 3.5mm combo audio jack supports headphones and microphones directly without an external adapter.
  • Dimensions: The unit measures approximately 7 x 6 x 4 inches, making it compact enough to mount behind a monitor or fit on a crowded desk.
  • Weight: The unit weighs approximately 3 pounds, keeping it light enough to reposition or travel with as needed.
  • Operating System: Ships OS-ready without a pre-installed operating system, so buyers need to supply and install their own OS license.
  • Storage Interface: Both M.2 slots use the PCIe 4.0 x4 interface, delivering fast sequential read and write speeds for SSD storage.
  • Wireless Standard: WiFi 6E (802.11ax) support enables access to the 6GHz band for lower interference and higher throughput in congested environments.
  • Form Factor: Slim small form factor desktop designed to minimize footprint while maintaining a full-featured I/O panel and active cooling.
  • Color: Available in matte black, giving the unit a neutral, professional appearance that suits most desk and media room setups.
  • In the Box: Package includes the mini PC unit, one HDMI cable, a US power adapter, and a user manual.

Related Reviews

MINISFORUM UM690L Slim Mini PC, AMD Ryzen 9 6900HX, 32GB RAM, 1TB SSD
MINISFORUM UM690L Slim Mini PC, AMD Ryzen 9 6900HX, 32GB RAM, 1TB SSD
87%
91%
Performance
87%
Value for Money
85%
Build Quality
88%
Cooling and Thermals
92%
Connectivity Options
More
MINISFORUM DeskMini UM760 Slim Mini PC, AMD Ryzen 5 7640HS, 16GB RAM, 1TB SSD
MINISFORUM DeskMini UM760 Slim Mini PC, AMD Ryzen 5 7640HS, 16GB RAM, 1TB SSD
86%
89%
Performance
92%
Value for Money
84%
Build Quality
91%
Connectivity
95%
Compact Design
More
MINISFORUM UM870 Slim Mini PC (Barebone)
MINISFORUM UM870 Slim Mini PC (Barebone)
80%
88%
CPU Performance
74%
Integrated Graphics
91%
Build Quality & Design
93%
Connectivity & I/O
89%
Multi-Monitor Support
More
MINISFORUM UM870 Slim Mini PC AMD Ryzen 7 8745H 32GB RAM 1TB SSD
MINISFORUM UM870 Slim Mini PC AMD Ryzen 7 8745H 32GB RAM 1TB SSD
86%
89%
Performance
90%
Multitasking Capability
78%
Gaming Performance (Light Titles)
92%
Triple Display Support
94%
Compact Design/Size
More
MINISFORUM UM750L Slim Mini PC, AMD Ryzen 5 7545U, 16GB RAM, 1TB SSD
MINISFORUM UM750L Slim Mini PC, AMD Ryzen 5 7545U, 16GB RAM, 1TB SSD
85%
91%
Performance
88%
Connectivity
85%
Cooling & Noise
80%
Setup & Installation
93%
Portability & Size
More
MINISFORUM X1-255 Mini PC
MINISFORUM X1-255 Mini PC
84%
88%
Performance
92%
Value for Money
90%
Size & Portability
85%
Networking & Connectivity
84%
Build Quality
More
MINISFORUM 129i7 ITX Mini PC
MINISFORUM 129i7 ITX Mini PC
85%
91%
Performance for Multitasking
78%
Gaming Capability (Light to Medium)
95%
Compactness and Design
89%
Customizability (RAM and Storage)
90%
Setup and Installation
More
MINISFORUM UM560 XT Mini PC
MINISFORUM UM560 XT Mini PC
86%
91%
Performance
88%
Build Quality
84%
Connectivity
92%
Portability
60%
Cooling/Heat Management
More
MINISFORUM M1 Pro 125H Mini PC Barebone
MINISFORUM M1 Pro 125H Mini PC Barebone
79%
88%
Processing Performance
67%
GPU & Graphics Capability
91%
Build Quality & Chassis
93%
Connectivity & I/O
71%
OCuLink eGPU Support
More
Shuttle DS10U5 Fanless Mini Barebone PC
Shuttle DS10U5 Fanless Mini Barebone PC
80%
91%
Build Quality
83%
Fanless Passive Cooling
88%
Display Output Versatility
93%
Memory Expandability
89%
Connectivity & Port Selection
More

FAQ

No, it ships OS-ready but without an operating system license included. You will need to purchase and install Windows separately, or you can install a Linux distribution of your choice. The hardware is fully compatible with Windows 11.

Unfortunately, no. The 16GB of LPDDR5 memory is soldered directly onto the motherboard, so there is no upgrade path. If you think you will need more than 16GB for virtual machines, large datasets, or heavy creative work, this is a meaningful limitation to factor in before buying.

Yes, it can drive three displays simultaneously using the HDMI 2.1, DisplayPort 1.4, and USB4 outputs. This works well for multi-monitor productivity setups, though you will want to verify that your monitors support the relevant input standards before assuming plug-and-play compatibility.

It depends on what you want to play. The integrated Radeon 680M handles esports titles like Valorant or CS2, older games, and emulation reasonably well. For current AAA releases at medium or high settings, it will struggle — this is not a gaming PC replacement, and there is no option to add a discrete GPU.

During typical office work and browsing, the unit runs quietly enough that you would barely notice it in a quiet room. Under sustained CPU load — think long video exports or compiling large codebases — the fan becomes clearly audible, though not aggressively loud. It is manageable in most environments.

Yes. A second M.2 PCIe 4.0 slot is available inside the unit, letting you add a second SSD of up to 2TB. This makes storage expansion reasonably straightforward, as long as you are comfortable opening the chassis and installing an M.2 drive.

The 2.5G Ethernet port supports wired speeds up to 2,500Mbps if your router and ISP plan can match it, making it genuinely useful for network-attached storage transfers and high-bandwidth workflows. WiFi 6E adds support for the 6GHz band, which means less interference and faster wireless speeds on compatible routers.

It works well for that use case. The HDMI 2.1 port supports 8K output at 60Hz and handles 4K HDR playback cleanly. Paired with its quiet operation during light media tasks, the UM690L makes a capable, unobtrusive living room machine.

A small number of buyers have reported occasional driver quirks specific to the AMD Radeon platform on Windows, such as display flickering or initial setup hiccups. In most cases these are resolved by downloading the latest AMD chipset and graphics drivers directly from AMD's website rather than relying on out-of-box defaults.

If your current mini PC is more than three or four years old, the performance difference will be noticeable across the board — faster app launches, smoother multitasking, and better integrated graphics. The triple-display output alone is a meaningful step up over many older compact systems that capped out at two screens.