Parts needed to build a PC
Parts needed to build a PC

Building a PC is like piecing together a complex jigsaw puzzle. Here’s a complete list to ensure you have all the parts you need. While building your own computer can be a rewarding experience, expect a little back & forth and testing/re-testing components in case any problems come up. When you do your own build you get complete control over choosing the hardware & software and it allows for customization. Oftentimes you can save some money too. Let’s walk through the list of parts needed.

Core Components

These are the essential parts of any PC.

The Central Processing Unit (CPU)

The CPU is the brain of your PC. It performs all the processing and calculations. Ensure you choose one that meets your needs.

The Motherboard

The motherboard is the backbone, connecting and communicating with all other components. Make sure it’s compatible with your CPU and other parts.

The Memory (RAM)

RAM is your PC’s short-term memory. It temporarily stores data for quick access, improving overall speed and performance.

The Storage

Storage holds your data. You can choose between Hard Disk Drives (HDDs) for high capacity or Solid State Drives (SSDs) for faster speed.

The Power Supply Unit (PSU)

The PSU is your PC’s power source. It’s important to choose a reliable PSU that can support all your components.

The Graphics Processing Unit (GPU)

The GPU handles rendering graphics and is essential for gaming and video editing.

The PC Case

The PC case houses all your components. It should be big enough to fit your motherboard, GPU, and other parts, and have good ventilation.

Peripheral Devices

These devices connect to your PC and provide interaction and functionality.


A good monitor is necessary to display your PC’s output. Consider factors like resolution, refresh rate, and size.

Keyboard and Mouse

You’ll need a keyboard and mouse for input. There are many options depending on your preference and usage.


Speakers or headphones are essential for audio output. Choose according to your needs and preferences.

Additional Parts

These are not mandatory but can enhance your PC’s functionality.

Operating System

Your PC will need an operating system (OS), such as Windows, Linux, or MacOS, to run.

Cooling system

A good cooling system, like fans or liquid cooling, can help keep your PC’s temperature under control, especially during intensive tasks.

Optical Drive

An optical drive is not as crucial today but may be useful if you plan on using CDs, DVDs, or Blu-ray discs.

Tools for the Build

You’ll need a screwdriver, anti-static wrist strap, and some cable ties for the build.


Building a PC can seem daunting, but with this list, you’ll have a clearer idea of what you need. Happy building!


  1. Can I build a PC myself? Yes, with some research and the right parts, you can build your own PC.
  2. What’s the most important part of a PC? All parts are important, but the CPU and GPU are typically the most critical for performance.
  3. Do I need a cooling system? While not always mandatory, a good cooling system can prevent overheating, especially in high-performance PCs.
  4. Can I use any motherboard with any CPU? No, you need to ensure the motherboard is compatible with the CPU.
  5. Do I need an optical drive? With most software and media being digital, an optical drive isn’t as essential as it used to be, but it can be useful for certain tasks.
Eric Chan

Hi! I’m Eric and I work on the knowledge base at  You can see some of my writings about technology, cellphone repair, and computer repair here.

When I’m not writing about tech I’m playing with my dog or hanging out with my girlfriend.

Shoot me a message at if you want to see a topic discussed or have a correction on something I’ve written.

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