The power supply unit is the part of the computer that most people buy without thinking or researching about it and by only looking at the wattage number. The Power Supply is actually a crucial part of the whole system as that is responsible for providing with the electronics with a constant, steady and clean current for them to be able to function without any hiccups. Also, the wattage number on a power supply is almost always a misleading number. A buyer must check with the total combined wattage that can be provided and not the peak number. Also, what are most important are the amps the PSU can provide. Read article