Being the enthusiastic computer geeks that we are at times, we cannot help but overdo it when it comes to identifying and choosing the proper peripherals to place in our PC. Power supplies can only take so much and that is why there are specified power distributions to be able to handle all the circuits and conduits that need power each time you switch you computer on.
Normally, the default power allocation is enough to rev up your motherboard, monitor, hard disks and video cards. A couple of optical drives can also be thrown into the fray and you still have sufficient power not to fry your power supply.
But you just cannot help at times to add more to the power requirements. Adding other hard drives, another optical drive like a DVD writer or other peripherals that technology has to offer. In short, you will have a CPU that will be forever fighting for power and if they are falling short of power requirements, you may see added peripherals burning out or a busted power supply even.
That is why when you go to the usual computer shops, you will notice that there are power supplies with greater power capacity. This is precisely the reason; to be able to adhere towards additions that will not be seen in the default computer specifications. We all have our own demands and apparently this stems from the fact that we do not know when the perfect PC setup will be there for us. This is only typical in terms of demands.