ミニPC 比較

How to choose a mini PC in 2026

Mini PCs went from hobbyist curiosity to genuine desktop replacement once Apple Silicon and AMD's Ryzen AI 9 HX 370 proved high performance fits in a 1-liter chassis. The Mars Score weights CPU/GPU, memory, storage, and I/O — with form factor and TDP scoring as constraints rather than primary axes.

Apple Silicon vs x86 mini PCs

The Mac mini M4 fits a desktop-grade chip into a 0.34 L chassis with a 65 W TDP and Thunderbolt 5. Beelink, Minisforum, and GMKtec ship Ryzen AI 9 HX 370 boxes around 0.9 L with similar TDP and discrete-class iGPU performance. Native ARM software is the deciding factor; if your toolchain is mostly Electron + browser + Office, either platform works. If you depend on Windows-only x86 binaries, stay on AMD or Intel. See our Apple ecosystem coverage in Mars Labs.

Memory: soldered vs SO-DIMM

Apple solders RAM to the SoC — choose carefully at purchase. Most x86 mini PCs ship socketed DDR5 SO-DIMMs you can upgrade later. Pay for 32 GB up front if you cannot upgrade; tolerate 16 GB if you can.

Thunderbolt and USB4 unlock external GPUs and docks

Thunderbolt 5 (Mac mini M4) and USB4 v2 (newer AMD/Intel boxes) both support eGPU enclosures and dual 4K displays through a single dock cable. Without TB/USB4, a mini PC quickly becomes a dongle nest.

Fan noise under sustained load

Specs sheets list TDP but rarely acoustics. A 65 W chip in a 0.5 L chassis throttles or screams; the same chip in a 1 L box stays quiet at ~30 dBA. Our Mars Labs measures fan curves under sustained Cinebench loads.

Home-server and HTPC duty

Mini PCs do double duty as Plex/Jellyfin servers, Home Assistant hosts, and lightweight virtualization boxes. Look for boxes with 2.5 GbE NIC, dual NVMe slots, and AV1 decode for that use case.

How vsMars scores mini PCs

Each score combines CPU/iGPU performance, memory, storage, port density, and thermal headroom per the methodology. For build alternatives see gaming PCs and the Buyer's Guides.