The four most common motherboard sizes are E-ATX, ATX, mATX (micro-ATX), and mini-ITX, each with its own set of advantages and limitations. Cost: Micro-ATX motherboards tend to be the cheapest ...
If you have an ATX case, you will also be able to use smaller motherboard sizes. If you only have a Mini-ITX case, you won't be able to fit an ATX motherboard in it. To see what size case you have ...
Although the compact case is designed for Micro-ATX and Mini-ATX motherboards, it also supports 4.5-slot GPUs up to 415mm in length - which means you could install a GeForce RTX 4090 or RTX 4080 ...