PC power supplies are relatively huge compared to those used with laptops.
But why is this so when a laptop today can have an equal level of performance as a high end PC?
Are they both switching power supplies or is the laptop PSU something completely different?
Also, why is it that a laptop power supply does not need a cooling fan but a PC one does?
And is there some serious difference in electricity consumption that one should factor in when deciding on whether to buy a laptop or a PC?