About Processor.................
CPU is a short name given to the words, CPU means "central processing unit".
The CPU is without a doubt one of the most important aspects of a computer, regardless of what you intend on doing with it. However, what you really need is dependent on what you intend on doing with the computer itself. If you are only going to surf the internet and if you need to use high speed internet it is not quite as imperative to get a high-end processor as it would be if you were gaming. If you want to play a latest games then you have to a lot of resources.
For bying a CPU you, you will almost always find one of the two most popular brands, Like Intel or AMD Processor. They both have high quality processors available.