For the past few months, a couple of ARM-based mini PCs have been sitting in my online shopping cart. What really caught my attention was the passively cooled chassis and the low idle power draw, which are suitable for my home lab experiments. Also, the price tag seems good enough not to hurt the wallet.

Apple’s Mac mini, running Apple Silicon, has already proven that Arm chips can punch well above their weight class. Devices based on the newer Snapdragon X series target a premium bracket, while Rockchip’s RK3588 sits in the more affordable SBC and mini PC tier. Those performance-per-watt numbers are hard to ignore.

The mini PC space was starting to take note. A small, always-on box tucked behind the monitor to run a handful of self-hosted services was all I wanted. That’s what made me eager to pull the trigger. But after researching whether it would actually work in my home lab, I took a step back.

The OS options are narrower than I had expected

Arm mini PCs check a lot of boxes on paper

As an x86 mini PC owner, I took a few things for granted. The most important thing is that I can throw any OS at it, and it just works. From Proxmox to Ubuntu Server, or even Windows 11. The mini PC runs everything on x86 hardware. This flexibility is why an x86 mini PC is part of my home lab. You can always repurpose the box as your needs change without worrying about whether the hardware underneath can support your favorite OS.

ARM mini PCs lack the same freedom. A lot of them ship with vendor-customized Linux or Android. Those customized OSes are tightly coupled to the System-on-Chip hardware. So you’ll struggle with the lack of proper kernel support, and sometimes it doesn’t exist.

I planned to run a community-supported OS, but that requires custom kernels, patches, and device trees that may or may not be maintained. Unfortunately, Proxmox does not officially support ARM. A forum thread covered a partial workaround, which was mentioned several months ago.

That means my always-on home lab box would depend on a stranger’s GitHub repo being maintained. It’s not exactly a stable foundation for something I want to set up, then forget about for months.

More than half of containers lack ARM builds

Docker is where things really unravel

Docker was where the compatibility problems first showed up. I browsed the Docker Hub pages for services like a media server, a reverse proxy manager, and a couple of monitoring tools. That’s when I learned that the Arm64 coverage was inconsistent across the board.

I did find multi-architecture images, but several had Arm64 tags that were months behind the main release. Those community-maintained tags had several open bug threads. For one container I rely on daily, the last Arm64 build was over a year old.

On Mac, Rosetta 2 handles x86-to-Arm translation quietly in the background. Linux has no equivalent. Docker lets you pull x86 images and run them through QEMU emulation. But that’s not a clean experience. You’ll face slowdowns, unexpected crashes, and debugging sessions that go nowhere useful. You’ll chase an emulation quirk rather than an actual problem with your setup.

The handful of tools I use don’t have any ARM-platform-supporting containers — CLI utilities, sync clients, and a couple of home server apps that work only with x86_64 binaries.

If the app doesn’t ship an Arm build, compiling from source is technically an option if the project is open — but that’s a lot of overhead for tools I just want to run. This is not an issue with popular projects since they tend to support multiple architectures. So the unavailability persists with niche self-hosted apps that don’t support ARM.

Who do ARM mini PCs actually work for

Not a bad platform, just not for my use case

For a home server workload that’s clean and Arm-native, these mini PCs are genuinely compelling in terms of hardware. If you plan to run a lightweight NAS, Pi-hole, and other utilities, the power efficiency and low noise profile of an ARM mini PC make a lot of sense. Qualcomm’s latest chips, in particular, are producing impressive results. The trajectory of the ARM ecosystem on Linux is clearly heading in the right direction.

But my stack is the opposite of purpose-built. It is a collection of containers and tools that solved a problem at the time. That’s exactly where Arm’s ecosystem gaps hurt the most. For an opportunistic home lab stack, that friction adds up fast.

The friction disappeared with an x86 mini PC

I ended up buying an x86 mini PC instead. An N100-based box idles at around 5–8W, which is competitive with most of the ARM devices I was considering. Proxmox was installed on the x86 mini PC without problems. Every container I pulled ran as a native image and started on the first try. No workarounds or emulation were necessary.

The ARM ecosystem on Linux is maturing. I’d revisit it in a year or two, especially if the projects I use in my home lab get multi-architecture support. Right now, an ARM mini PC is still a far cry if you plan to run a real home lab workload rather than a single dedicated service. You’re better off with the x86 architecture that handles everything and gets out of your way. Sometimes, that’s exactly what you need to build a home lab.