Computer Terminology

CPU stands for Computer Processing Unit, and is the brain of the computer, all of the inputs and programs run off of this before reaching any other components.

GPU stands for Graphics Processing Unit, and handles Video encoding and Video Decoding, which is what your computer does when you watch videos online, The GPU also handles 3D rendering, such as video games, video editing , and 3D printing programs.

RAM stands for Random Access Memory, and is one of the most important components in a computer because it can transfer data over 100x faster then your hard drive. Every program uses ram in one way or another, so the more of it you have, the better. In todays standards you would normally want at least 8 gigabytes of ram, but some opt for more based on their workload or needs.

PSU stands for Power Supply Unit, this component delivers power to the components without sending too much of it and damaging it , you never want to cheap out on a power supply.

The motherboard is what all of the components plug into, and holds everything in place correctly and safely, think if this as your skeleton.

SSD stands for Solid State Drive , and is the latest in storage technology, and is far faster and more reliable then the outdated Hard Disk Drive, which is commonly found in Low End Computers.

HDD stands for Hard Disk Drive, and is a drive that uses a series of disks and a reader needle to read data, the disks spin very fast , up to 7200rpm and the reader pulls data off of it and to the user, this is much slower then an SSD. Hard Disk Drives have a tendency to fail and lose all of the users data , it is recommended to upgrade to an SSD if you still have an HDD.

SATA stands for Serial Advanced Technology Attachment. This is the most common form of power and data transfer interface for todays Hard Disk and Solid State Drives. SATA power is also commonly used to power Miscellaneous devices inside the system such as Case Fan Controllers and RGB Lighting. 

RAID stands for Redundant Array of Independent Disks. And is a way of combining 2 or more similar drives into a virtual single drive.