KAMRUI AM21 Mini Gaming PC with Ryzen 7 and Radeon 780M

The KAMRUI AM21 is one of the most complete mini PCs on the market in its price range.

It packs a powerful AMD Ryzen 7 8745HS with integrated Radeon 780M graphics, the best iGPU available in mini PCs, along with DDR5, NVMe PCIe 4.0, WiFi 6, RGB lighting and triple display support, all into a chassis the size of a book.

✅ Pros:

• Outstanding CPU performance for its size (8 cores, up to 4.9 GHz)

• Radeon 780M: the best integrated GPU for gaming in mini PCs currently available

• Triple/quadruple 4K display support

• DDR5 + PCIe 4.0 NVMe: a very fast storage combination

• Advanced connectivity: USB4, WiFi 6, Dual LAN

• Competitive price against equivalent Ahrefs or Mac Mini

❌ Cons:

• The graphics performance doesn't match a discrete dedicated GPU.

• The base version includes only 16 GB of RAM (the premium version has 32 GB)

🏁 In short: If you're looking for a compact gaming PC for 1080p medium-high settings, work, streaming, and multiple monitors without spending money on a tower, the KAMRUI AM21 is hard to beat in its price range (€331).

🔗 View Prices

📋 Technical Specifications Table

🎨 Design and Construction Quality

The KAMRUI AM21 boasts a compact, all-black design with a matte metallic finish that conveys a sense of solidity. Unlike other mini PCs that resemble plastic toys, this machine has a robust presence on the desk. The cooling vents distributed across several sides of the chassis not only serve a technical function but also contribute to a more aggressive, "gaming" look.

The perimeter RGB lighting is subtle yet effective—it's not the kind that distracts with flashing colors, but rather adds personality to the setup. The power button is well-placed on the front, and the rear ports are very well distributed, preventing cables from becoming tangled.

The VESA-compatible design allows it to be mounted behind the monitor, completely freeing up desk space — something that triple-monitor setup users will especially appreciate.

🖥️ Screen and Multimedia

The KAMRUI AM21 does not include its own screen, as it is a mini desktop PC. What is relevant here is its video output capability: it supports up to three or four simultaneous displays (depending on the version) at resolutions up to 4K@60Hz via two HDMI 2.1 ports and one USB4/DisplayPort.

For multimedia content, the Radeon 780M with RDNA 3 architecture seamlessly handles 4K HDR playback, streaming on platforms like Netflix or Prime Video, and light video editing. The AV1 hardware decoding engine integrated into the Zen 4 chips makes streaming extremely energy efficient.

Audio is handled via a 3.5 mm jack or HDMI/DisplayPort to external monitors or sound systems. There are no built-in speakers, which is typical for this product category.

🎮 Performance and Software

CPU: Premium laptop-level power

The AMD Ryzen 7 8745HS with Zen 4 architecture (8 cores, 16 threads) isn't a cut-down, low-power processor—it's the same chip found in high-end gaming laptops. With turbo boosts up to 4.9 GHz, its performance in office tasks, photo editing, multitasking, and emulation is outstanding for its form factor.

In practice, the computer boots Windows 11 in less than 10 seconds, applications open instantly, and multitasking with dozens of Chrome tabs, Teams, and background applications does not generate any perceptible lag.

Radeon 780M iGPU: The king of integrated graphics

The Radeon 780M with RDNA 3 (12 Compute Units at 2600 MHz) is currently the most powerful integrated GPU available in consumer mini PCs. Its actual capabilities in 1080p gaming:

• 🟢 eSports and competitive games (Valorant, CS2, Rocket League): 80-120+ FPS on high quality without issues

• 🟡 Modern AAA games (Cyberpunk 2077, Fortnite): 30-50 FPS on low-medium quality with FSR enabled

• 🟢 Console emulation (PS2, GameCube, Wii, partial Switch): excellent performance

• 🟡 Indie games and games from 3-4 years ago: very playable at medium-high quality

One trick that makes all the difference: the Radeon 780M scales very well with fast RAM. At 5600 MHz (as included in this system), performance is noticeably better than with DDR4.

Software and operating system

It comes with Windows 11 Pro pre-installed and activated, which is a plus compared to Home versions. The level of bloatware is minimal compared to manufacturers like Lenovo or HP. The AMD drivers are correctly installed, and Windows updates are smooth thanks to the PCIe 4.0 SSD.

🔋 Energy Consumption and Cables

The AMD Ryzen 7 8745HS has a base TDP of 45W, but the KAMRUI AM21 dynamically manages power consumption according to the load. At idle, consumption is around 8-12W, making it extremely efficient for home server or HTPC use. Under sustained maximum load (gaming + CPU) it can reach 55-65W — a fraction of what a traditional tower gaming PC consumes.

The included adapter is 120W with a proprietary circular connector. It does not use standard USB-C charging (although the USB4 port supports PD for peripherals), which means you need to carry the adapter if you use it as an occasional laptop.

🔌 Connectivity and Extras

Connectivity is one of the strengths of the KAMRUI AM21 and clearly differentiates this model from more basic versions:

Front ports:

• 🔵 USB 3.2 Gen2 Type-A x2

• 🔵 USB4 (40 Gbps) with DisplayPort and PD

• 🎧 3.5 mm combo audio/microphone jack

• 💡 Power button with LED

Rear ports:

• 🖥️ HDMI 2.1 x2 (4K@60Hz)

• 🔌 USB 3.2 Type-A x2

• 🌐 LAN RJ45 x2 (2.5G + 1G)

• 🔌 DC power connector

Wireless:

• 📶 WiFi 6 (802.11ax) — faster and more stable connections

• 🔵 Bluetooth 5.2

What it DOESN'T have:

• ❌ SD/microSD slot

• ❌ VGA or DVI port

• ❌ Physical fingerprint reader (Windows Hello via external camera)

• ❌ IP water/dust resistance certification

• ❌ 5G (it's a mini desktop PC, not applicable)

💬 Reviews on Well-Known Pages

🟢 PCWorld

PCWorld highlighted the KAMRUI AM21 as "one of the most compelling mini PCs on the market" for those seeking a compact machine with genuine gaming capabilities. They directly compared it to the Mac Mini, stating that the KAMRUI offers "more ports, easier upgrades, and access to a much larger game library" at the same or even lower price.

🟢 Kotaku

Kotaku included the AM21 in its list of best mini PC deals, noting that the Ryzen 7 8745HS with 32GB of DDR5 provides "smooth 1080p gaming" and that the Radeon 780M handles most popular games smoothly. They described it as a "more than worthy alternative to the Mac Mini" at a lower price.

🟢 Gizmodo

Gizmodo described it as an "affordable high-performance mini PC" and recommended it especially for those looking to move away from large tower PCs without sacrificing real power, highlighting its value for money compared to the market.

🟡 WindowsForum (In-depth technical analysis)

WindowsForum's review was more technical and balanced: they praised the performance of the Ryzen 8745HS and the Radeon 780M, but warned about possible thermal throttling during very long gaming sessions or in hot environments. They recommended "balanced" mode instead of "performance" for extended sessions.

🟡 Reddit r/MiniPCs

Reddit users confirmed the overall positive experience, with some reporting mild thermal throttling that could be mitigated by placing the device horizontally or improving airflow. The community particularly values ​​it as an emulation and esports platform, with very positive comments regarding its price-performance ratio.

🔬 Technical Tests

Synthetic benchmarks

Gaming benchmarks (1080p)

Thermal tests

Under sustained load (30 minutes of gaming), the APU temperature ranges from 75-88°C depending on the fan settings. The default fan mode keeps the system virtually inaudible at idle and produces moderate noise under maximum load—never bothersome. In very hot environments, it is recommended to enable "Performance" mode in the BIOS to increase fan speed and prevent throttling.

🏆 Final Conclusion

Who is it ideal for?

The KAMRUI AM21 with Ryzen 7 8745HS and Radeon 780M is the perfect mini PC for:

• 🎮 Casual gamers who play eSports, indie games, or AAA games from 2-3 years ago at 1080p

• 👨‍💼 Professionals who need seamless multitasking, video conferencing, and lightweight editing

• 📺 HTPC users who want a powerful media center with 4K output

• 🕹️ Console emulation enthusiasts up to partial PS3/Switch

• 🖥️ Multi-monitor setups of up to 3-4 screens for productivity

• 💰 Budget-conscious buyers looking for maximum performance without a tower

It's worth it?

Yes, absolutely. The combination of a Ryzen 7 8745HS, Radeon 780M, DDR5 RAM, PCIe 4.0, and WiFi 6 at this price is hard to beat in the mini PC segment. It's not a replacement for a gaming PC with an RTX 4060, but if your gaming focuses on esports, indie games, and older titles, this machine performs admirably.

🔄 Alternatives to consider

🛒 Where to buy it?

You can find the KAMRUI AM21:

🔗 View on AliExpress → — Most economical option for international buyers. Approximate price: €331.

💡 Tip: Compare the price of the 16 GB + 512 GB version vs. the 32 GB + 1 TB version. Often the price difference between versions is minimal, and it's worth upgrading directly to 32 GB for future use.