Difference between i3, i5, i7 and generations ?

No. Of Cores

No. of cores is the most important part that affects the performance .No. of cores increases the speed whenever certain program requires. So core i3 is dual core and i5 and i7 both are quad core processor

Turbo Boost

It is most interesting fact that comes about the processor and it that Core i3 runs faster than the Core i5 and Core i7 the clock speed of i3 is ranging from 3.4 Ghz to 4.2Ghz While in case of i5 and i7 it is 2.4 Ghz to 3.8Ghz and 2.9Ghz to 4.2Ghz respectively. So basically the role of turbo boost is to just increase the core clock speed dynamically whenever it requires . So in Core i3 turbo boost is not available while in i5 and i7 it is so it balances the clock speed in case of i5 and i7 because whenever certain program need more speed turbo boost quickly respond and gives more speed than it’s usual one.

Cache Memory

A processor speed not only determine by clock speed and no. of cores .Cache memory has also important part as it is also the part of processor .So bigger is better . Core i3 have 3Mb or 4Mb ,while in i5 have 6Mb and i7 have 8Mb.

Hyper Threading It is most clever way to allow even a single core to handle multiple cores. It creates virtual cores to perform a thread or allow multiple thread to work simultaneously .Surprisingly i3 and i7 have but not in i5 .

In case of generation of processor it is simply speed the previous generations .Here we understand generations individually.

Intel 2nd Gen

It is named as Sandy Bridge uses 32 nm processor ,it uses 64Kb L1 cache and 256Kb per core .

Intel 3rd Gen

It is known as Ivy bridge faster than Sandy and use 22 nm processor consumes 50 percent less energy but one disadvantage is that it emits more heat as compared to Sandy bridge.

Intel 4th Gen

Haswell the faster than above two uses same 22 nm processor like Ivy. It has lot of features from Ivy .The major advantage is that it can be used in ultra portable devices as its low power consumption

Intel 5th Gen

The Broadwell the latest and smallest and uses 14nm processor .It has average 90 min longer battery life than it’s predecessor