What component should I start the PC building process with?
We recommend starting with the CPU because it determines most of your component choices. Your motherboard, RAM, and even your need for a graphics card all hinge on what CPU you choose. This is why choosing an Intel or AMD CPU is the first and most critical step of your PC building journey.
What is a form factor? What is the difference between E-ATX, ATX, Micro-ATX and Mini-ITX
You can think of a form factor the same way you think about the size of a car. Just like a compact, mid-sized, or full-sized car, motherboards have similar sizes. Compact or small form factor PC's use Micro or Mini-ITX motherboards, mid-sized builds use ATX sized motherboards and, finally, full sized builds use E-ATX form factors.
What size PC should I build?
When choosing the size of your PC here are some things to keep in mind. Small form factor PC's present some limitations on the components you can use in your PC and, given their size, introduce build challenges. ATX or mid-sized PCs are the most common builds and provide the largest compatibility options. They are also among the easiest PCs to assemble. Finally, E-ATX provides far more options and power but the size of the PC can be daunting and will take up a lot of space. This is often the most costly build option.