A compact AMD mini PC running four different operating systems—straight out of the box—has delivered one of the clearest demonstrations yet that your software stack can change how a modern processor performs just as much as the silicon itself. In a seven-page benchmark comparison published by Phoronix, the performance-tuned Linux distribution CachyOS took the overall performance lead on a Ryzen AI 9 HX 470 system, beating the preinstalled Windows 11 Pro and edging out Ubuntu 26.04 LTS and Fedora Workstation 44.

The results are not a blanket Linux victory. Windows 11 retained meaningful leads in OpenGL graphics and several video encoding and AI workloads. But the test underscores a practical reality for anyone buying a high-end mini PC: the operating system you choose today is a genuine performance component, not just a compatibility layer.

The Test Setup: Four OSes, One Tiny PC

The hardware under test is the BOSGAME VTA-439, a retail mini PC built around AMD’s Ryzen AI 9 HX 470 processor (formerly codenamed Gorgon Point). It packs 12 cores and 24 threads—four Zen 5 performance cores and eight Zen 5c efficiency cores—with boost speeds up to 5.2 GHz, Radeon 890M integrated graphics, 32 GB of dual-channel DDR5-5600 memory, and a 1 TB NVMe SSD. The chip’s configurable TDP ranges from 15 W to 54 W, meaning cooling, firmware, and OS power management can tip the scales significantly.

Microsoft Windows 11 Pro shipped with the system and was updated through July 8. Ubuntu 26.04 LTS (released April 23, 2026), Fedora Workstation 44 (released April 28, 2026), and the rolling-release CachyOS were clean-installed in mid-July and tested exactly as they arrived, with no manual tuning. According to the test methodology, every OS ran its default configuration. That makes the results a direct measure of what a buyer would experience after unboxing and installing updates.

Workload-by-Workload Breakdown: Where Each OS Shines

The benchmark sweep covered CPU rendering, content creation, video encoding, OpenGL and Vulkan graphics, compute, and local AI inference. No OS dominated every category.

CPU Rendering and Creator Workloads: Linux Pulls Ahead

In CPU-intensive tasks like Blender (CPU-only scenes), LuxCoreRender, Intel Embree, Open Image Denoise, OSPRay, and Java benchmarks, Linux distributions consistently outperformed Windows 11. CachyOS often led, but Ubuntu and Fedora also collected first-place finishes. For example, in Blender CPU scenes, CachyOS won several tests while Fedora claimed others; Windows 11 only took the lead when GPU acceleration via HIP was involved. This pattern suggests that thread scheduling and efficient core utilization on Linux give it an edge for rendering, simulation, and parallel batch work—common on compact workstations.

Graphics: Windows 11 Fights Back

When the Radeon 890M’s integrated graphics are the star, Windows 11 makes its strongest case. In Unigine Superposition benchmarks across Low, Medium, High, and Ultra presets, Windows 11 consistently outpaced all three Linux distributions. The OpenGL driver stack on Windows simply delivered higher frame rates in this OpenGL-heavy test. That matters for users running legacy engineering tools, visualization software, or older games that still lean on OpenGL.

Vulkan compute presented a more mixed picture. Windows 11 was faster in several integer-focused tests, while Ubuntu and CachyOS excelled in certain floating-point workloads. Phoronix’s analysis noted that floating-point performance was broadly similar between the Windows Radeon driver and Linux’s Mesa RADV driver, but Windows held distinct strengths in INT32 and INT16 operations. CachyOS also beat Windows 11 in the native 3DMark Wild Life Extreme test, though Fedora could not run that proprietary benchmark due to a library compatibility issue—a reminder that ecosystem support is part of the performance equation.

Video Encoding: It Depends on the Codec

Encoding results split along codec lines. Windows 11 won multiple tests using the OpenAPV encoder, while Linux distributions dominated when using SVT-AV1. If your workflow revolves around a specific codec, the OS choice could flip the winner.

Local AI: No Clear Champion

Llama.cpp tests mirrored this fragmentation. Linux performed better with the Vulkan backend in many cases, but Windows 11 won several CPU BLAS scenarios. The exact model, quantization, and inference method you choose will likely dictate which OS performs best on this hardware.

What It Means for You, by User Type

For Home Users and Mini PC Buyers

If you bought a Ryzen AI 9 HX 470 mini PC as a general-purpose desktop, Windows 11 remains the safest and most compatible choice. It delivers strong graphics performance, runs a vast library of consumer software, and requires no learning curve. But if you’re willing to explore Linux—and your workload leans toward CPU rendering, software development, or open-source media tools—both Ubuntu and Fedora can yield tangible speedups right out of the box. For maximum performance without manual tinkering, CachyOS is the standout.

For Power Users and Enthusiasts

The CachyOS result should grab your attention. By rebuilding packages with modern CPU targets (x86-64-v3/v4), applying link-time optimization and profile-guided optimization, and shipping a custom kernel with scheduler tweaks, CachyOS extracts more from AMD’s heterogenous core layout without any user intervention. It is a rolling-release distro, however, which means you’ll need to stay comfortable with frequent updates and occasional manual fixes. The performance reward is real, but it comes with an attention tax.

For Developers and IT Decision Makers

Ubuntu 26.04 LTS and Fedora Workstation 44 both ran very close to CachyOS in many CPU tests. Canonical promises security maintenance for this LTS until May 2031, making it ideal for systems that need long-term stability. Fedora’s fast-moving nature suits developers who want current toolchains but also a more conventional support cycle. Keep in mind that any Linux option will require evaluating application compatibility—especially for proprietary or Windows-centric tools.

How We Got Here: The Long Fuse of Performance-Tailored Linux

CachyOS’s showing is not a surprise to those tracking the distribution’s development. Its maintainers have spent years refining package compilation and kernel configuration for modern AMD and Intel silicon. The project’s documentation explains that it builds packages with x86-64-v3 and v4 baselines, applies ThinLTO, and uses an AutoFDO performance profile for its default kernel. It also offers multiple scheduler choices (EEVDF, BORE, BMQ) and amd-pstate enhancements.

At the same time, mainstream distributions have sharpened their own performance. Ubuntu 26.04 LTS shipped with a modern kernel and Mesa stack, and Fedora 44 continued its tradition of tracking upstream components rapidly. The test’s methodology—pure out-of-the-box—means these gains are not theoretical; they are available to any user willing to install the OS.

AMD’s Ryzen AI 9 HX 470 itself invites OS competition. With a mix of performance and efficiency cores, a capable iGPU, and a configurable power envelope, it exposes the strengths and weaknesses of scheduler heuristics, driver maturity, and compiler optimizations more than a homogeneous chip would.

What to Do Now: Matching Workload to OS

The benchmark does not crown a single winner for every buyer. Instead, it offers a decision tree:

  • You live in Windows software and play Windows games. Stick with Windows 11. Its graphics advantage in OpenGL and solid showing in some compute tests mean you’re not sacrificing much for compatibility.
  • You run CPU-heavy open-source or scientific workloads (rendering, compilation, simulation). Try CachyOS. The performance lead in Blender, LuxCoreRender, and other tests is measurable and could translate to hours saved on long jobs.
  • You want a middle ground with long-term support. Install Ubuntu 26.04 LTS. It was close behind in many benchmarks and offers five years of stability.
  • You prefer a current, developer-friendly Linux with balanced performance. Fedora Workstation 44 is a strong pick, provided your software toolkit runs smoothly on it.

Before switching, measure your own workflow on a live USB or secondary drive. Benchmarks are directional; your specific application’s behavior with Vulkan, OpenCL, HIP, or AVX-512 will determine the real-world benefit.

Outlook: Mini PCs as Performance Battlegrounds

The BOSGAME VTA-439 test is a harbinger. As compact PCs adopt hybrid CPU architectures, potent integrated graphics, and AI accelerators, the software stack becomes just as critical as the hardware spec sheet. Expect more distributions to ship with AMD P-State optimizations, compiler flags tailored to Zen 5, and scheduler profiles designed for these chips. Meanwhile, Microsoft’s Windows on Arm push and ever-improving Linux kernel support mean the OS wars will be fought on mini desktops, not just servers. For users, that’s a net positive: healthy competition means you can finally pick an operating system because it’s faster for what you do, not just because it’s the default.