Regardless, you no longer have to be eligible for the Genius IQ Club (Mensa) in order to build a computer. Today’s computer manufacturers have made it much easier for the enterprising do-it-yourselfer to create a great system.
First thing is first. What do you need to build a computer? First, you will need a case. The variety is mind numbing. Get the best case you can afford, we recommend you opt for "tool-less" case design, which enables you to click---open, click---closed. Most cases and motherboards use the ATX Formfactor, standardizing the sizes of the components and all of the power connections. Next, choose a power supply (if your case already came with a power supply, be sure that it will meet your power needs). How do you know if it meets your needs? Here is a quick power usage guide:
Component Wattage Required
Motherboard 15-30
Low-End CPU 20-50
Mid To High-End CPU 40-100
RAM 7 per 128MB
PCI Add-In Card 5
Low To Mid-Range Graphics 20-60
High-End Graphics 60-100
IDE Hard Drive 10-30
Optical Drives 10-25
Once you have selected both the case and power supply, be sure you have the following items:
• A set of screwdrivers (small, large, slot, Phillips), or a PC Tool Kit
• An anti-static wrist strap
• Needle-nosed pliers
• CPU (processor)
• CPU cooling fan and heat sink
• Sound Card
• Motherboard
• One or more hard drives
• Graphics card
• One or more RAM DIMMs (Memory modules)
• An operating system
Make sure you determine which parts to use – and making sure they are the right parts – these two things are critical to building your new dream PC.

