Processor

 The processor is called the brain of the computer. 

In other words, the essential activity of the computer is to do this processor. Just as there is no human being without a brain, there is no PC without a processor. The main driver of the computer is this CPU. Externally it is small, but its working capacity is unimaginable. The overall processing of the computer is done through the processor. No matter what we do with the computer, the processor does the most complex and significant work. In other words, the functionality of your laptop depends largely on the CPU. That means how fast your PC will work means how fast it will process data depends on the CPU. So don't forget to take the processor at high speed. Different brands of different models of varying speed processors are available in the market, such as- Intel Pentium Four, Dual-Core, Core to Do, Core to Quad, Core i3, Core i5, Core i7, AMD, Athlon, etc. See how fast your processor is. Please take a look at its cache memory when buying a processor. This is because of the higher the cache memory, the higher the processing power and speed of the processor. It's up to you which one to choose. Writing these in detail will not be an opportunity to do the real work.