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Mini PC and SFF Cases: A Buying Guide

How to choose a mini PC or small form factor (SFF) case: motherboard size, GPU clearance, cooling and power supply types.

Last updated21 Oct 2026
Fact-checked21 Oct 2026
Sources cited—
StandardsEditorial policy →
Form factorMotherboardNotes
Mini-ITX caseMini-ITX (170 × 170 mm)Most common SFF build; check GPU length and slot width
Mini-STX / 4×4 boxesSmaller proprietary-style boardsUsually no full-size GPU
Micro-ATX compactMicro-ATXMore slots, larger case

Checklist

  • GPU length, height and slot thickness clearance
  • CPU cooler height limit
  • PSU type: SFX, SFX-L, ATX or external brick
  • Airflow path for a high-power GPU

Specific case recommendations: TBD (pending verified dimensions). Prefer a ready-made machine? See mini PCs for AI.