Save money by buying a hot-plug power supply to improve your system's reliability and flexibility. With these power supplies, you don't need to shut down your system even for a minute. They are designed to counter voltage spikes and to quickly adapt to the system. You can only get these advantages on your power supply if you source it from a reputable supplier.
A power supply enclosure does more than just housing the components. It is the first line of security when it comes to electrical safety. If you are planning to build your own power supply or you already have one without the cover, then it is time to improve your safety. An enclosure for a power supply protects the comments from damage and shields the operators from looming electrical shock.
Most of the power supplies out there are very efficient in converting the unregulated AC power to a stable DC power that different systems need. However, they still generate considerable heat. Efficient ventilation is required on the power supply enclosure to dissipate the heat away. If there is not enough space to vent out heat, the power supply can fail due to overheating. Intelligent SMPS will shut down when the internal temperature exceeds the set threshold.