How to Build a PC for $100


As personal computers become more advanced, older components drop dramatically in price. A PC-enthusiast looking for a challenge can now build a computer tower for $100. The computer will be capable of performing basic functions, such as web-browsing and word-processing, but will consume more energy than more advanced systems.

Things You'll Need

  • Central processing unit
  • Graphics card
  • RAM
  • Motherboard
  • Tower
  • Power supply unit
  • Disc drive
  • Case
  • Screwdriver

How to Build a PC for $100

  • Search out used computer hardware online (try and at computer parts fairs, flea markets and garage sales. Computers that others want to throw out are a goldmine. You can harvest the parts and save the PC from clogging a landfill. New cheap components will be difficult to find, as most retailers don't stock outdated hardware. Check websites such as and

  • For word processing and web browsing, you will need a processor clocked at around 500 MHz and RAM (random access memory) of 256 MB. This should be sufficient for older editions of software programs.

  • Seek out a second-hand CRT monitor. Thanks to the popularity of LCD monitors, the used market is flooded wtih the once-standard cathode-ray tubes. You may even find a cheap CRT at a thrift store.

  • Avoid paying for the Windows by installing the Ubuntu-distributed Linux operating system. Visit to download a free copy or have a disk mailed to you. Ubuntu is a graphical operating similar to Windows. You can use it to browse the internet, word-process and edit photos. It cannot run programs developed for Windows, but many comparable programs are Ubuntu-based.

  • features an extensive guide on building a computer. All the components can be connected by screws or plugs; no soldering is required.

Tips & Warnings

  • It may be cheaper and easier to buy an already built low-end PC than attempting you build your own.
  • When shopping for used hardware, look for a guarantee that the product is still functional.


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