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Understanding Processor, Core, Difference Between Them And Intel Vs AMD

August 01, 2015

Every PC and Smartphone has a processor and the usual question that arises Processor_Understandingwhile selecting processor is “Which is the best processor for me?” This is very important, as with a higher CPU you can do heavier multitasking and fastest operations. So before selecting the best processor to suite your requirement lets understand Processor first.

What is Processor?

Of course, the processor is the brain of the computer, which alternately referred as a CPU (Central Processing Unit), or a microprocessor of the computer.

A computer processor incorporates the functions of a computer's central processing unit (CPU) on a single or few integrated circuits (IC). The microprocessor is a multipurpose, programmable device that accepts digital data as input, processes it according to instructions stored in its memory, and provides results as output.

Over the history of computer processors, the speed and capabilities of the processor have dramatically improved. Intel introduced its first 4-bit microprocessor 4004 in 1971 and it contained 2300 transistors which could perform roughly 60000 operations per second. The appearance of the microprocessor revolutionized digital system design starting in the 1970s, and continuing on until the present day.

See the Changes in Microprocessor over the time

It’s Logic capacity increases ~ 30% per year, clock frequency increases ~ 20% per but cost per function decreases ~20% per year. Now more and more functionality can be packed onto a single microprocessor chip.

With the ability to put large numbers of transistors on one chip, it becomes feasible to integrate memory on the same die as the processor. This CPU cache has the advantage of faster access and increases the processing speed of the system for many applications.

From past decade, in our pc first there was a dual-core, quad-core and now there are Core i3 processors which has two cores, Core i5 CPUs have four and Core i7 models also have four cores. Advancing technology makes more complex and powerful chips feasible to manufacture. The advent of low-cost computers on integrated circuits has transformed modern society.

Intel Chips timeline:

Since 2004, Intel has introduced microprocessors with multiple cores and millions more transistors.  Here is a history of Microprocessor transistor count-


What Are Cores?

A core is usually the basic computation unit of the CPU that reads instructions to perform specific action through ALU. If CPUs had a single core that meant the physical CPU had a single central processing unit on it and it cannot also handle multiple operations at a time.

To increase performance, manufacturers add additional “cores,” or central processing units. A dual-core CPU has two central processing units which are fitted in single circuit to behave a single unit. But they have their own controllers and caches which allow them to work faster than single core processor. Dual-core can perform all your actions quickly and at the same time.

Difference between Processors:

Phrases like “dual core,” “quad core,” and “octo core” all just refer to the number of cores a CPU has:

Intel vs AMD :

Intel and AMD are still your main choices when buying a PC or laptop. This choice is become more complicated when you visit online or retail store for buying Laptop and you see 100s of model of Intel and AMD.

Generally AMD processors are cheaper than their Intel counterparts. So, if you are looking for a budget, then you find lot of AMD processor laptops.

Intel definitely becomes a favorite processor, but for lost cost AMD is better. Intel is usually better performance than AMD but AMD is cheaper and decent performance

Anyway, generally...


There’s no real “right” answer when you’re trying to decide whether you should go for an AMD or Intel processor. Every PC builder has different needs and budgets.