Difference between core i3, i5 and i7?

I love intel very much, they make cool process's for multimedia work but when it comes to products name its totally confusing.

What to choose a core i7 or a core i5???

What is all this i74700HQ???  But hold on for a second, we will get to it later. First a bit of background woo-dent it be simpler if we name just in them in the gigahertz they run at. Simpler short of but at time more confusing. Suppose when Pentium 4 was lunched an equivalently clocked Pentium 3 was more faster as it can do more work with each cycle. As a customer I will expect the product with higher name to be the better one and there lies the problem. Not all gigahertz are created equal and rating products that way is like rating the performance of a car in what rpm it runs.

One of the initiative are taker are taken to move away from this on early 2000 know as P.R.(Performance Rating) naming schema. Where the processor were given a 4 digit number and the enthusiast bereave was based on the performance of the processor of that clock speed. But this fixed nothing, indirectly processors were named in their clock speed.

Intel come in spotlight, it introduced the core series. A line of cpus which dramatically outperform their predecessors at much lower clocks and the gigahertz war ended, intel shifted their marinating to a new line of cup's and they are:-

1. Pentium dual core

2. Core i3

3. Core i5

4. Core i7

Core i3

Other than a Pentium a core i3 will be a most basic option with 2 processing core and hyper-threading for a better multitasking with smaller cash, it will consume less power and will perform wars than a i5 processor but it will cost less.

Core i5

mobile processor or the processor in a laptop will have 2 core with hyper-threading and the desktop will have 4 cores and no hyper-threading, the have few things in common improved on board graphics and turbo boost for temporary enhancements when your system needs the power for playing games or like this stuff.

CORE i7

All core i7 are hyper-threaded for heavy work loads. A core i7 can have 2 to 8 processioning cores form a ultra-book to a workstation, it can support 2 to 8 sticks of ram and its TDP can me from 10 Watts to 130 Watts. So there are many varieties there because it has more cache, faster turbo-boost and improved on-board graphics.

The summary that I can give is a core i7 is the best consumer great product that intel can built and the biggest drawback is the higher price tag.

The safest way to shop is to get a same company and the same generation it will be easy for you.

One thing I want to mention is (n -1) in the number of core that a processor can have, where n is equal to  the number after I.
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