We want you to understand what you really need to play better PC games and to also have the right hardware. When you buy a video game and you install it, you should understand what that game needs to perform at it best and not the minimal.
Video Cards
The two top video card brands are- Nvidia and AMD. The video card is one of the most important hardware components you will need to dramatically improve frame rates, graphic quality and game performance.

The card has a chip called a Graphics Processor Unit, a microprocessor specialized for video calculations. The GPU lets the computer's main processor do its job, allowing the computer to run at full speed.

Sound Cards
The top Sound card brands are Creative Sound Blaster, Auzentech , Turtle Beach, Asus, HT Omega and M-Audio Delta.
A sound card is an expansion card or IC for producing sound on a computer that can be heard through speakers or headphones. Although the computer does not need a sound device to function, they are included on every machine in one form or another, either in an expansion slot (sound card) or on the motherboard (onboard).

The top brands of memory are- Mushkin,Corsair, Crucial / Micron, Kingston, Samsung.
Pronounced ramm, is an acronym for random access memory, a type of computer memory that can be accessed randomly; that is, any byte of memory can be accessed without touching the preceding bytes.  If gaming is the most demanding thing you do on your computer, 8GB is the minimum and there's no reason to go beyond 16GB.

Top brands are I-7 and I-5 from Intel, then the AMD A8. Keep in mind you do not need to spend a fortune in a processor to having a good gaming experience, but if you want higher frame rates, consider researching a better processor.
As an overclocker, the CPU is where most of your computer’s heat will be originating from. It is also one of the most expensive to replace, so make this your top priority.

Top fan brands- Corsair, Brushless Radial Blower, 1st Player Fire Rose Hydraulic bearing, Water / Liquid Coolers.
A CPU fan will remove heat from your CPU but that heat may build up inside your computer’s case. To release heat from the entire computer, you will need a couple of case fans. One for moving cooler air in and the other for moving hotter air out. Basic game fan sizes- Front Intakes 120mm, 1 x exhaust 120mm

Power Supply
Top brands are- Thermaltake, Corsair , EVGA, Seasonic  Snow. The computer power supply (also known as the PSU) is an often-overlooked yet important part of your custom gaming PC.

Without a power supply, your computer would just be a box full of metal and plastic without power.