Difference between Intel i3, i5 and i7 processor.

Ever wondered what can be the possible difference between Intel i3, i5 and i7 processor? These processors work a little differently and can spin your head around if you go too deep. If you are confused onto which processor would you should proceed, we have separated the processors on vital differences between them.

Difference between Intel i3, i5, and i7 processor:


A core can be taken as an individual processor. A dual-core processor, therefore, has two internal processors, a quad-core model has four. More cores are useful for multitasking, for example, you can run two applications at the same time, each one having access to its own dedicated processor. The more cores there are, the more tasks can be served at the same time. Core i3 range is entirely dual-core. The i5 and i7 range are all quad-core.

ModelCore i3Core i5Core i7
Number of cores244
Turbo boostNoYesYes
K modelNoYesYes

Turbo boost

The Intel Turbo Boost Technology allows a processor to dynamically increase its clock speed whenever the need arises. The maximum amount till the Turbo Boost can raise the clock speed at any given time is dependent on the number of active cores, current consumption, power consumption, and the processor temperature.

Turbo boost is present in Core i5 and i7 processors and not in i3 processors.

Cache size

Clock speed ain’t the only thing that determines how good the processor is, other factors have a major role in it too and one of the factors is Cache size. When a CPU finds it is using the same data over and over, it stores that data in its cache. Cache is even faster than RAM because it’s part of the processor itself. 

The bigger the cache the better it is. 

Core i3: 3-4 MB

Core i5: 6 MB

Core i7: 8 MB


A thread is defined to be a set of programmed instructions that a CPU has to follow. Hyper-threading is the process of carrying down multiple tasks at the same time. Therefore, it is a useful way to reduce complexity while working and work on different tasks simultaneously.

A dual-core CPU or an i3 can process two threads at once, similarly, an i5 can process four threads at once as it does not support hyperthreading on the current version and an i7 can process 8 threads at once.


     Source: make use of

  • Core i3: Basic users. Economic choice. Good for browsing the web, using Microsoft office, making video calls, and social networking. Not for gamers or professionals.


  • Core i5: Intermediate users. Those who want a balance between performance and price. Good for gaming if you buy an HQ processor or a Q processor with a dedicated graphics processor.


  • Core i7: Professionals. This is the best Intel can do right now.

So, Difference between Intel i3, i5, and i7 processor are now cleared on every bit. It’s up to you now which one of them you are in need of. 

featured image source: PC World

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