What is a Mini ATX computer?
A Mini ATX computer uses a Mini-ATX motherboard. Mini-ATX is a smaller form factor of the ATX motherboard standard. The form factor defines the board's dimensions, power supply type, mounting hole positions, and the number of ports on the back panel. A Mini-ATX board is smaller than a full ATX board, so it fits in compact cases while keeping a standard layout.
Key construction features
Mini-ATX motherboards typically use surface-mount technology for component placement. They use solid-state capacitors for stable power delivery. Many boards use an 8-layer PCB design, which improves durability and longevity. The form factor also determines which cases, power supplies and expansion options a builder can use.
Mini ATX compared with other form factors
| Form factor | Relative size | Typical use |
|---|---|---|
| ATX | Largest of the three | Full-size desktops with many expansion slots |
| Micro-ATX | Medium | Compact desktops with fewer expansion slots |
| Mini-ATX | Smaller than ATX | Compact builds that keep a standard layout |
| Mini-ITX | Smallest | Very small builds with limited expansion |
Use cases
Mini ATX systems suit compact desktops, office and kiosk installations, and builds where space is limited but expansion is still needed. Before buying, confirm the form factor of a motherboard and its case, as they must match.
Thinvent products with Mini ATX-sized compact design
The Thinvent® Industrial PC IPC3 uses an Intel® Core™ i3-1215U processor with 6 cores, up to 4.4 GHz and 10 MB cache. It includes 16GB DDR4 RAM and a 1TB SSD, and runs on a 12V 7A adapter. The IPC3 is available with Windows 11 Professional, Windows 11 Pro, Windows 11 IoT Value, DOS and Thinux™ Embedded Linux. Some versions add Quad DB9 Serial ports. Versions are offered without WiFi.
