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minisforum

minisforum DeskMini UM870 Slim barebone mini PC Ryzen 7 8745H 16 GB DDR5 1 TB

SKU CH-BQ8R-8HC7E

Barebone mini PC with Ryzen 7 8745H, 16 GB DDR5, 1 TB storage, Radeon 780M graphics, triple 8K@60 Hz via HDMI 2.1 and USB4, 2.5 GbE, WiFi 6E and Bluetooth 5.3

Options UM870 Slim · 16+1T

  • Ryzen 7 8745H 8-core CPU reaches 4.9 GHz boost for fast multitasking
  • Radeon 780M RDNA 3 graphics drives 8K 60 Hz on three screens
  • 16 GB DDR5 memory installed with two slots expandable to 32 GB each
  • 1 TB PCIe 4.0 SSD fitted plus second slot for 2 TB more storage
  • 5 Gb LAN, WiFi 6E and Bluetooth 5.3 give strong wired and wireless links

Compact Ryzen barebone

The minisforum DeskMini UM870 Slim is a new barebone mini PC built around an AMD Ryzen 7 8745H processor with 8 cores and 16 threads boosting to 4.9 GHz. It ships with 16 GB of DDR5 memory and a 1 TB PCIe 4.0 SSD. Integrated Radeon 780M graphics based on RDNA 3 architecture handle visual workloads without a discrete card. The system targets users who need a small-footprint desktop for multitasking, light content creation or casual gaming.

Expansion slots and I/O

Two SODIMM slots accept DDR5 modules up to 32 GB each, and a second PCIe 4.0 M.2 slot is open for additional storage. Video output comes from HDMI 2.1, DisplayPort and USB4, each able to drive an 8K 60 Hz panel, while a third display runs at 4K 60 Hz. A 2.5 GbE RJ45 port, WiFi 6E and Bluetooth 5.3 provide wired and wireless connectivity. Four USB ports round out the peripheral complement.

Sustained thermal behaviour

The slim chassis relies on an integrated cooling solution to manage the 8745H under prolonged load. During extended compile jobs or long gaming sessions the processor will throttle to stay within its thermal envelope, so peak boost clocks are not maintained indefinitely. Radeon 780M performance similarly settles to a stable level after the initial burst. Buyers expecting continuous maximum turbo across hours of heavy compute should consider a larger form factor.

Highlights

  • Ryzen 7 8745H 8-core CPU reaches 4.9 GHz boost for fast multitasking
  • Radeon 780M RDNA 3 graphics drives 8K 60 Hz on three screens
  • 16 GB DDR5 memory installed with two slots expandable to 32 GB each
  • 1 TB PCIe 4.0 SSD fitted plus second slot for 2 TB more storage
  • 5 Gb LAN, WiFi 6E and Bluetooth 5.3 give strong wired and wireless links

Specifications

No published specifications for this item yet.

Other versions of this model

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Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

Does the Ryzen 7 8745H throttle under long, heavy workloads?

The processor has a 45 W base power and boosts to 4.9 GHz; sustained loads will be managed by the built-in cooling system.

How loud and hot does the UM870 Slim get during all-day operation?

The compact chassis uses an active cooler to keep the 8-core CPU and Radeon 780M graphics within thermal limits during continuous use.

What memory and storage are already installed so I know what to add?

It ships with 16 GB of DDR5 RAM and a 1 TB PCIe 4.0 SSD; two SODIMM slots support up to 32 GB each and a second SSD slot is available.

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