---
product_id: 674257301
title: "UM870 Slim Mini PC Barebone AMD Ryzen 7 8745H Mini Computer(8C/16T, Up to 5.0GHz), Support DDR5 RAM,M.2 2280 SSD,8K@60Hz HDMI 2.1/USB4 Output, WIFI6E/BT5.3/Auto Power On(No DDR&SSD&OS)"
brand: "minisforum"
price: "¥103067"
currency: JPY
in_stock: true
reviews_count: 11
category: "Minisforum"
url: https://www.desertcart.jp/products/674257301-um870-slim-mini-pc-barebone-amd-ryzen-7-8745h-mini
store_origin: JP
region: Japan
---

# 8C/16T Ryzen 7 8745H up to 5.0GHz Supports DDR5 RAM & PCIe4.0 SSD 8K@60Hz HDMI 2.1 & USB4 output UM870 Slim Mini PC Barebone AMD Ryzen 7 8745H Mini Computer(8C/16T, Up to 5.0GHz), Support DDR5 RAM,M.2 2280 SSD,8K@60Hz HDMI 2.1/USB4 Output, WIFI6E/BT5.3/Auto Power On(No DDR&SSD&OS)

**Brand:** minisforum
**Price:** ¥103067
**Availability:** ✅ In Stock

## Summary

> 🚀 Power-packed mini PC that fits big ambitions

## Quick Answers

- **What is this?** UM870 Slim Mini PC Barebone AMD Ryzen 7 8745H Mini Computer(8C/16T, Up to 5.0GHz), Support DDR5 RAM,M.2 2280 SSD,8K@60Hz HDMI 2.1/USB4 Output, WIFI6E/BT5.3/Auto Power On(No DDR&SSD&OS) by minisforum
- **How much does it cost?** ¥103067 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/674257301-um870-slim-mini-pc-barebone-amd-ryzen-7-8745h-mini)

## Best For

- minisforum enthusiasts

## Why This Product

- Trusted minisforum brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Stunning 8K Visuals:** Experience crystal-clear 8K@60Hz output via HDMI 2.1 and USB4, perfect for immersive presentations and creative projects.
- • **Whisper-Quiet Cooling:** Advanced active cooling with phase change material cuts CPU temps by 25% while keeping noise under 35dB—work or play in peace.
- • **Blazing Multi-Core Power:** 8 cores and 16 threads turbocharged up to 5.0GHz for seamless multitasking and pro-level workflows.
- • **Future-Proof Connectivity:** Wi-Fi 6E, Bluetooth 5.3, 2.5G LAN, and multiple USB 3.2 Gen2 ports ensure lightning-fast, stable network and peripheral connections.
- • **Next-Gen Memory & Storage:** Dual DDR5 slots and dual M.2 PCIe4.0 SSD bays deliver ultra-fast responsiveness and up to 4TB storage capacity.

## Overview

The MINISFORUM UM870 Slim Mini PC is a compact powerhouse featuring an AMD Ryzen 7 8745H processor with 8 cores and 16 threads, supporting blazing DDR5 RAM and PCIe4.0 SSD storage. It delivers stunning 8K visuals through HDMI 2.1 and USB4 outputs, backed by a whisper-quiet active cooling system. Equipped with Wi-Fi 6E, Bluetooth 5.3, and 2.5G LAN, it ensures ultra-fast connectivity for professional multitasking, gaming, and creative workflows—all in a sleek, space-saving design.

## Description

desertcart.com: MINISFORUM UM870 Slim Mini PC Barebone AMD Ryzen 7 8745H Mini Computer(8C/16T, Up to 5.0GHz), Support DDR5 RAM,M.2 2280 SSD,8K@60Hz HDMI 2.1/USB4 Output, WIFI6E/BT5.3/Auto Power On(No DDR&SSD&OS) : Electronics

Review: Great mini PC with LLM inference capabilities - Um870 slim barebone. Excellent mini pc. It is faster than my old 5950x CPU powered PC. I added 96 GB of ddr5 5600mhz and now I can run open source LLMs (llama.cpp via vulkan) on this little device. Great for light gaming and local chatbots.
Review: Es un gran equipo relación costo / beneficio y aunque presente dificultades con la unidad recibida el soporte técnico de Minisforum siempre estuvo presente para ayudarme hasta resolver el inconveniente

## Features

- Powerful Processor : MINISFORUM UM870 Slim mini pc is equipped with AMD Ryzen 7 8745H processor, 8 cores /12 threads (up to 5.0 GHz), providing excellent multi-tasking capabilities and high performance. Compared to the Ryzen 5 7640HS, the Zen 4 AMD Ryzen 7 8745H has a CPU speed that is 1.79x faster, a faster GPU clock speed, and and TDP less 9W. Overall, the Ryzen 7 8745H outperforms the Ryzen 5 7640HS by a considerable 21%
- High-performance Graphics :Equipped with AMD Radeon 780M integrated graphics card (based on RDNA3 architecture, 12CU, max frequency 2700MHz), it supports high-resolution and high-refresh rate image output. It supports ultra-high-definition image quality through HDMI 2.1 (8K@60Hz), DP 1.4 (4K@144Hz) and USB4 interfaces (8K@60Hz), meeting the needs of professional work and entertainment
- DDR5 RAM & PCIe4.0 SSD: MINISFORUM UM870 Slim Supports dual DDR5 SODIMM RAM and 2×M.2 2280 PCIe4.0 SSD slots, supporting up to 4TB storage capacity. It provides ultra-fast data reading and writing speeds to ensure smooth operation and fast response of the system
- Efficient Coling System: The active cooling system with phase change material reduces CPU temperature by 25% compared to passive heat sinks, ensuring stable and efficient performance under heavy workloads. It delivers a stable 60W performance while the system operates at a noise level below 35dB, keeping your device cool and quiet whether you're working or playing
- Multi-interface & Fast Network: 2xUSB 3.2 Gen2 Type-A ports, 2xUSB 2.0 ports, 1xUSB4 port (supports Alt PD), 1xHDMI port, 1xDisplayPort port, 1xaudio interface and 1xClear CMOS button. MINISFORUM UM870 Slim mini computer has 2.5G WLAN wired network port and Wi-Fi 6E/BT5.3 wireless network card, providing stable network connection (software routers, firewalls, NAT, and network isolation) and fast transmission speed
- Note:Please update the driver version before updating the system.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DL5ZRQV3 |
| Best Sellers Rank | #2,437 in Computers & Accessories ( See Top 100 in Computers & Accessories ) #82 in Mini Computers |
| Brand | MINISFORUM |
| Card Description | Integrated |
| Chipset Brand | AMD |
| Computer Memory Type | DDR5 RAM |
| Customer Reviews | 4.4 4.4 out of 5 stars (24) |
| Date First Available | October 28, 2024 |
| Graphics Coprocessor | MD Radeon 780M |
| Hard Drive | 4 TB SSD |
| Hard Drive Interface | PCIE x 4 |
| Hardware Platform | PC |
| Item Dimensions LxWxH | 5.12 x 4.96 x 1.97 inches |
| Item Weight | 2.7 pounds |
| Item model number | UM870 Slim |
| Max Screen Resolution | 7680x4320 |
| Memory Speed | 5600 MHz |
| Number of Processors | 8 |
| Number of USB 2.0 Ports | 2 |
| Number of USB 3.0 Ports | 2 |
| Operating System | OS |
| Processor | 4.9 GHz ryzen_7 |
| Processor Brand | AMD |
| Product Dimensions | 5.12 x 4.96 x 1.97 inches |
| RAM | 32 GB DDR5 |
| Screen Resolution | 3840 x 2160 |
| Series | UM870 Slim |
| Wireless Type | 802.11ax, Bluetooth |

## Product Details

- **Brand:** MINISFORUM
- **CPU Model:** Ryzen 7
- **CPU Speed:** 4.9 GHz
- **Cache Size:** 16 MB
- **Graphics Card Description:** Integrated
- **Graphics Coprocessor:** MD Radeon 780M
- **Model Name:** UM870 Slim
- **Operating System:** OS
- **Personal computer design type:** Mini PC
- **Specific Uses For Product:** Business, Education, Everyday Use

## Images

![UM870 Slim Mini PC Barebone AMD Ryzen 7 8745H Mini Computer(8C/16T, Up to 5.0GHz), Support DDR5 RAM,M.2 2280 SSD,8K@60Hz HDMI 2.1/USB4 Output, WIFI6E/BT5.3/Auto Power On(No DDR&SSD&OS) - Image 1](https://m.media-amazon.com/images/I/51leqz2rPWL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great mini PC with LLM inference capabilities
*by S***D on October 14, 2025*

Um870 slim barebone. Excellent mini pc. It is faster than my old 5950x CPU powered PC. I added 96 GB of ddr5 5600mhz and now I can run open source LLMs (llama.cpp via vulkan) on this little device. Great for light gaming and local chatbots.

### ⭐⭐⭐⭐⭐ Review
*by S***Z on May 27, 2025*

Es un gran equipo relación costo / beneficio y aunque presente dificultades con la unidad recibida el soporte técnico de Minisforum siempre estuvo presente para ayudarme hasta resolver el inconveniente

### ⭐⭐⭐⭐ Good quality mini PC with some minor issues
*by E***A on February 3, 2025*

I have both 870 Slim and 890 Pro versions, they are both very fast and quiet with some minor issues. The main differences that makes the Pro version slightly better are (1) It is slightly faster, maybe 3% or so (2) has an NPU, but it is practically useless (3) Pro version has two ethernet ports instead of one (4) It has an oculink port, which uses the PCI port so, you can only install one NVme HD if you use the oculink port. These differences do not matter for most users. Overall I am very happy with both of them. They are both small, efficient, they don't get hot or make any fan noise. They can be directly powered from USB4 port, with some decrease in max clock speed. But there are some annoying issues, mostly minor things: (1) The wifi cards are not supported properly. The slim version had a wifi card which was not recognized by linux. The pro version had a slightly better wifi card, but was still an obscure brand. The issue is not the speed here, making them recognized by the OS. I replaced them both with more common models, it is about $20-30 to replace each. (2) The windows key was invalid in the Pro version. The Slim version was barebones it did not come with any OS. (3) The Slim version has screws at a very inconvenient location. You have to remove bottom pads glued to the box. Without the pads the vent will touch the surface and will not work well. It is not a good design. The Pro version is much better, but it has two cables attached to the lid on opposite sides, and it is not east to detach and attach them. If they were on the same side, the lid could be opened without detaching of them. (4) I tried installing 96GB RAM but it caused some glitch with the GPU driver. I tested the RAM and it was not faulty. 64GB or 32 GB RAM both work fine. (5) I don't like the bios, it is too rudimentary with very few options. Despite these issues, I like them a lot. This generation of AMD mobile chips (8945, 8745, etc) are really great. I also have a Mac mini pro (M2) and their performances are similar. Mac has a better GPU but the AMD is faster for most of other tasks.

## Frequently Bought Together

- MINISFORUM UM870 Slim Mini PC Barebone AMD Ryzen 7 8745H Mini Computer(8C/16T, Up to 5.0GHz), Support DDR5 RAM,M.2 2280 SSD,8K@60Hz HDMI 2.1/USB4 Output, WIFI6E/BT5.3/Auto Power On(No DDR&SSD&OS)
- TEAMGROUP Elite SODIMM DDR5 32GB (2x16GB) 5600Mhz (PC5-44800) CL46 Non-ECC Unbuffered 1.1V 262 Pin Laptop Memory Module Ram - TED532G5600C46ADC-S01
- Samsung 990 EVO Plus SSD 1TB, PCIe Gen 4x4, Gen 5x2 M.2 2280, Speeds Up-to 7,250 MB/s, Upgrade Storage for PC/Laptops, HMB Technology and Intelligent Turbowrite 2.0, (MZ-V9S1T0B/AM)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-21*