The brain of the PC is CPU. However other processors are added in the system for video acceleration, audio-digital signal processing, etc. the CPU does the main hard work, crunching calculations with high speed and efficiency.

Actually, the power of the CPU is assumed to be the main recognizing factor in a PC. Certainly, for a true gaming machine, the processor and the motherboard on which it lives are the main vital parts, with the memory and graphics card both at the back.

The CPU is the important unit that performs the main calculations in the PC. In games, it processes vital things such as, artificial intelligence, weapons and damage calculations, etc. With earlier 3-D graphics cards, the CPU processes part of the graphics pipeline.

Motherboards, the major circuit boards of PCs, are built around processors. With the launch of quicker processors or as processors’ form factors change, new motherboards are created to support them accordingly.

In past, Intel ruled the processor world. The first PCs, produced by IBM in the year 1981, had a 4.77MHz Intel processor named the 8088. It wasn’t the first computer system, but it well defined personal computing for a long period of time.

CPUs advanced ever since then. At present, PC processors run at more than 3000MHz, and a lot of development have taken place. IBM is not the only company producing PCs at present, but all PCs are known as “IBM compatible” or “clones” of the actual PC, IBM defined the standards effective even nowadays.