Types of Cases

Baby Cases

The baby case lives up to its name. It is a small desktop case that fits an absolute minimum or items. You’re usually limited to two drives, because the 130-175w power supply is typically located right behind the drivers, and no room left for an internally mounted hard drive. You are also limited to using a small motherboard ---typically with a minimum of features or ports. Finally, the small case and motherboard will usually limit the number of expansion slots available.

 Desktop

Desktop cases come in a variety of shapes and sizes, but generally offer a lot more versatility and upgrade potential then baby cases. with regular desktop cases you can usually count on two external drive bays and two internal drive  bays –great for a floppy drive ,CD or DVD drive and one or two hard drive s. if you find a desktop case with three external drive bays , you can even add a second CD drive  or a tape drive .the other advantages to regular desktop cases is that they have the physical space to support large power supplies (usually 200-250w +),they fit larger motherboards , and they support more expansion cards .

Tower Cases

The tower case is typically a large vertically mounted case, which is designed to hold the maximum number of drives .there are often four or more external drives bays, and at least four internal drive bays. the extra space also allows the largest power supplies (300w+) which are vital to support an array of different drives .Tower cases can hold the very largest of motherboards (though in practice the mother boards are rarely  larger than those found in a regular desktop ) Tower cases also provide the best air ventilation and can support two or more fans and air filters . The other advantage of a good airflow is that high –end CPUs (even multiprocessor mother boards) can be cooled most effectively.