Compact Mini-ITX Cases That Still Fit a Full-Size GPU
Mini-ITX and small form factor (SFF) cases pack a full gaming PC into roughly 4 to 20 litres, a fraction of a mid-tower's footprint. They suit gamers and creators who want a desk-friendly or LAN-portable rig without dropping to a compromised spec.
Three numbers decide the build before anything else: GPU clearance (many SFF chassis now take 320 to 360mm cards, so even a 304mm RTX 5090 Founders Edition fits), CPU cooler height, and PSU form factor - most sub-12-litre cases need an SFX or SFX-L supply, not standard ATX. Every case here is stocked locally in South Africa with warranty and nationwide delivery.
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How to Choose a Mini-ITX / SFF Gaming Case
SFF cases span roughly 4 to 20 litres. Ultra-compact sandwich designs near 8 to 12 litres sit neatly on a desk or in a bag for LAN events, while larger 18 to 20-litre ITX cases trade some size for easier cooling and cable routing. Pick the litre class that matches how portable you actually need the rig to be.
Usually yes, but check clearance first. A 304mm RTX 5090 Founders Edition or a compact dual-fan card fits most modern SFF chassis rated for 320mm-plus. Longer 340 to 360mm triple-fan AIB cards need cases at the top of the clearance range, so match the exact card length to the case spec before buying.
Most cases under about 12 litres take an SFX or SFX-L supply, not a full-size ATX unit. SFX is the compact standard; SFX-L is slightly longer for higher wattage and quieter fans. Larger ITX cases sometimes accept ATX, so confirm the PSU form factor the chassis lists before you order.
Check the CPU cooler height limit and radiator support. Many SFF cases take a 240 or 280mm AIO or a low-profile air cooler. Balance intake and exhaust, use the case's full fan mounts, and favour a GPU with an open-air cooler over a blower. Temperatures run warmer than a mid-tower, so plan airflow deliberately.
Choose Mini-ITX for the smallest, most portable build with a single expansion slot. Choose Micro-ATX if you want a slightly larger case with more PCIe slots, easier cooling, and lower-cost boards. This page covers Mini-ITX and SFF chassis; see our Micro-ATX cases for the mid-size option.
