Computers differ from televisions and microwaves because you can buy a new one a little bit at a time instead of all at once. But there still certain advantages to buying a whole new unit.
Cost
Obviously, it's cheaper to upgrade a part of something, than to replace it as a whole. You'll save hundreds of dollars in the short run.
Ease
Conversely, it's much easier to buy a whole new unit. Someone who is inexperienced with upgrading hardware can create a problem rather than solve one.
Support
Buying a computer from Dell or HP sets you up with a customer support line, and your entire computer is protected by a warranty. You also have a wide variety of warranty options.
Education
With guided instruction, learning upgrade computer components can teach you a lot about how computers work, and make you able to repair problems without having to deal with customer service.
Time
It takes a lot less time and potential hassle to simply plug in a pre-built computer instead of building your own. If your time is valuable and your budget allows, buying a new computer may be a better option.
Tags: whole unit, with customer