MINISFORUM UM870 Slim Review: Worth It? (November 2026)
The MINISFORUM UM870 Slim suits multitasking and multi-display desks if you want a Ryzen 7 8745H mini PC with USB4, HDMI and DisplayPort. Choose a preconfigured version for included memory and storage, or the barebone model if you want to select those parts yourself.
On this page (7 sections)
- What does the MINISFORUM UM870 Slim review find?
- Which UM870 Slim configuration should you choose?
- How capable is the Ryzen 7 8745H for desktop work?
- Can the UM870 Slim connect three displays?
- What connectivity does the UM870 Slim provide?
- What are the UM870 Slim's main trade-offs?
- Is the MINISFORUM UM870 Slim worth choosing?
The MINISFORUM UM870 Slim is a Ryzen 7 mini PC for multitasking and multi-display desks. Its main choice is configuration: buy one with memory and storage included, or select the barebone version and supply those parts yourself.
All 3 options use the UM870 Slim name and Ryzen 7 8745H processor family. They differ in included memory and storage, so compare those details with your workload before deciding.
What does the MINISFORUM UM870 Slim review find?
The UM870 Slim stands out for its Ryzen 7 8745H, three display connections and two M.2 SSD slots. It is worth considering if you need room for several workspaces or want to expand storage, but the barebone configuration adds setup work.
The 32GB and 1TB version is the most complete starting point here. The 16GB and 512GB version reduces included capacity, while the barebone option is for buyers ready to source memory, storage and an operating system.
MINISFORUM UM870 Slim Mini PC AMD Ryzen: Best for a ready-to-use setup
- Ryzen 7 8745H
- 32GB DDR5 RAM
- 1TB PCIe 4.0 SSD
- USB4, HDMI and DisplayPort
The preconfigured option with 32GB RAM and a 1TB SSD, plus USB4, HDMI and DisplayPort for up to 3 displays.
Pros
- 32GB RAM and 1TB SSD included
- Supports expansion to 96GB RAM
- Dual M.2 slots support up to 4TB total storage
- Three display outputs
Cons
- More memory and storage than some everyday setups need
- DisplayPort is specified for up to 4K at 120Hz
Our score weighs specs, features and buyer feedback against what you're shopping for.
If you are comparing the brand's broader range, start with our guide to the best MINISFORUM mini PC. It can help you see where this model fits among other options.
Which UM870 Slim configuration should you choose?
Choose based on how much memory and storage you need on day one, and whether you want to install components yourself. The processor name alone doesn't tell you what comes in each version.
| Configuration | Included memory | Included storage | Best fit |
|---|---|---|---|
| 32GB model | 32GB DDR5 RAM | 1TB PCIe 4.0 SSD | A ready-to-use capacity for heavier multitasking or larger local files |
| 16GB model | 16GB DDR5 RAM | 512GB PCIe 4.0 SSD | A smaller starting setup for everyday work |
| Barebone | None | None | Buyers who want to choose and install their own parts |
The 32GB version lists support for expanding memory to 96GB and storage to 4TB across two SSD slots. The 16GB and barebone versions also specify two DDR5 SODIMM slots and two M.2 2280 PCIe 4.0 SSD slots, with up to 4TB storage capacity.
Think through your apps before paying for more capacity. Many browser tabs, large creative files and virtual machines can use more memory or storage than light office work, but your own software requirements are the best guide.
Our explainer on how much storage you need in a mini PC can help you estimate space for apps, documents and media. For a broader checklist, see how to choose a mini PC.
How capable is the Ryzen 7 8745H for desktop work?
The Ryzen 7 8745H gives the UM870 Slim 8 cores and 16 threads in the 32GB configuration's specifications, with a stated maximum speed of 4.9GHz. That makes it a strong fit to consider for a desktop that handles several active tasks at once.
Processor specifications don't guarantee how a particular app will perform. If your work depends on a specific video editor, development tool or business app, check its recommended system requirements and compare them with the UM870 Slim's memory and graphics options.
The configured versions pair the processor with AMD Radeon 780M integrated graphics. The product details describe the graphics as RDNA 3 based, but they don't guarantee performance in a particular game or creative workload.
For gaming, 3D work or video production, look for independent results from the exact configuration and software you plan to use. Don't treat a graphics comparison in a product claim as a substitute for workload-specific testing.
Can the UM870 Slim connect three displays?
The UM870 Slim offers HDMI, USB4 and DisplayPort, and the 32GB version specifies support for 3 independent displays. Its stated output limits vary by connection: HDMI 2.1 and USB4 up to 8K at 60Hz, and DisplayPort 1.4 up to 4K at 120Hz.
Those maximums depend on the monitor, cable and settings. Check the inputs on your displays and confirm which port supports the resolution and refresh rate you want.
USB4 also supports up to 40Gbps transfer speed on the 32GB configuration, according to its specifications. That connection may be useful if you need fast data transfer or want to connect a compatible display, though it doesn't replace checking the exact needs of your devices.
Count the ports you use every day before buying. The UM870 Slim has two USB 3.2 Gen 2 Type-A ports, two USB 2.0 Type-A ports, one 3.5mm audio jack and one 2.5Gbps Ethernet port.
What connectivity does the UM870 Slim provide?
The UM870 Slim combines Wi-Fi 6E, Bluetooth 5.3 and 2.5Gbps Ethernet. That gives you wired and wireless network choices, plus Bluetooth for compatible peripherals.
Use Ethernet if your desk is close to a router or switch and you want a wired connection. Wi-Fi can keep the setup simpler, but actual network speed depends on your router, internet service and surrounding conditions.
Review your peripherals too. Four USB-A ports across two speeds can cover a keyboard, mouse, storage drive and other devices, while USB4 adds a USB-C connection.
What are the UM870 Slim's main trade-offs?
The main trade-off is choosing the right configuration and validating your exact display or workload needs. The model offers expansion options, but they don't make every configuration equally ready out of the box.
Consider these points before choosing:
- The barebone option excludes RAM, SSD and operating system, so account for those parts and setup.
- The 16GB version has less included memory and storage than the 32GB version.
- Display limits differ across HDMI, USB4 and DisplayPort, so check your monitors and cables.
- Product details vary in how they describe the processor threads and graphics frequency, so verify the exact configuration if those figures matter to your workload.
If you want a different MINISFORUM model, compare our MINISFORUM UM790 Pro review and MINISFORUM AI X1 Pro review. The MINISFORUM X1 Lite review and MINISFORUM NAB6 Lite review offer two more comparison points.
Is the MINISFORUM UM870 Slim worth choosing?
The UM870 Slim is a good candidate if its Ryzen 7 processor, display outputs and expansion slots match your setup. Pick the 32GB version for more included memory and storage, the 16GB configuration if that capacity fits your needs, or barebone if you want to supply the parts.
Before deciding, check software requirements, monitor connections and the exact configuration you plan to buy. If those line up, the UM870 Slim gives you a compact desktop foundation with room for storage expansion.
Frequently asked questions
What processor does the MINISFORUM UM870 Slim use?
The UM870 Slim uses an AMD Ryzen 7 8745H processor. The configured versions describe it as an 8-core, 16-thread chip with a maximum speed of 4.9GHz.
That makes it a fit for buyers comparing higher-core-count mini PCs for multitasking, while your software and workload still determine how much processor capacity you need.
How much memory and storage does the UM870 Slim support?
The configured choices include 16GB DDR5 RAM with a 512GB SSD or 32GB RAM with a 1TB SSD. The system has 2 DDR5 SODIMM slots and 2 M.2 2280 PCIe 4.0 SSD slots; one configuration specifies memory expansion to 96GB and storage expansion up to 4TB.
Check the exact option before buying.
Can the UM870 Slim run three displays?
The UM870 Slim has HDMI, USB4 and DisplayPort outputs, and the 32GB configuration specifies 3 independent displays at once. Its stated maximums are 8K at 60Hz over HDMI 2.1 and USB4, and 4K at 120Hz over DisplayPort 1.4.
Confirm your monitor inputs and cable requirements before planning a multi-screen desk.
Does the UM870 Slim barebone version include RAM and an SSD?
No. The barebone UM870 Slim is sold without DDR5 RAM, an SSD or an operating system.
It has 2 DDR5 SODIMM slots and 2 M.2 2280 PCIe 4.0 SSD slots, so you need to choose compatible parts and install an operating system before you can use it as a desktop.
