Anyone needing a new computer faces a tough choice: you can either go for a complete system, or you can build your own PC. As most complete systems are cheaper than the sum of their parts, when is it really worth it to build your own?

Under the hood of a midrange PC

Imagine you want to build a new PC and want to use a few remnants from your old system. If you were satisfied with the performance of your CD-ROM drive, hard drive, printer or monitor, then it could be worth it to simply buy the remaining components - you might not even need a new case.

We also hope that this article will reach the individualists among you, i.e., users who know exactly which processor, motherboard and graphics card they want to install, but who just don't know how to fit it all together. The third group of users we want to reach are those people who only want to swap out a component, whether a graphics card or a CPU.

Many are intimidated by hardware. Some people won't even put in a new card on their own if they can help it. Yet the computer is now a mass-market product that, thankfully, has also brought about broad standardization.

This article will guide you unerringly through each step of successfully building your own PC. Of course, this article assumes that you know how to properly handle electronic components, that you know how to use tools, and, perhaps most importantly, that you take pleasure in this kind of tinkering. As we are going to introduce a large spectrum of PC components, users who only want to upgrade individual parts can skip certain sections in this guide.