Not necessarily. But sometimes it seems that way. If you buy a prebuilt computer like Dell, Hp, Compaq, and Gateway,etc, they tend to use cheap parts. Thats why its always best to build your own, you end up paying less money for same amount of computer and you have better parts. And you can't just keep using your computer without doing a little system maintenance on it like opening the case and blowing the dust bunnies out, which if you don't will clog up the cooling fans, possibly burning out your processor.