What is the difference between the generation

[SalmanKhan11]

What will be the gaming difference between i5 i5 (1,2,3,4,5,6)th generations

 

[Kronima]

http://www.tomshardware.com/reviews/cpu-hierarchy,4312.html

you would probably see a 10-15 fps boost going from a 760 to a 6600 in Gta V

 

[synphul]

It depends on the game. Second gen core i cpu's made a decent performance gain over first gen. Since then the performance gains have been more subtle. A stock 2500k vs a stock 7600k in watchdogs 2, the min fps difference is 14.4fps and average fps difference is 25.8 fps. When the 2500k is oc'd to 4.5ghz, the 7600k stock has a min fps lead of 10.8fps and average fps lead of 17.3fps.

In bf1, the 7600k stock has a min fps lead of 20fps and average fps lead of 16.8fps (if the 2500k is oc'd) or 25.2fps lead if the 2500k is stock.

TW Warhammer, the 7600k has a min fps lead of around 10fps, average fps the 7600k has a lead of 50-73fps over the 2500k depending if it's stock or oc'd to 4.5ghz.

Here's a comparison list for those and several more games.
http://www.gamersnexus.net/guides/2773-intel-i5-2500k-revisit-benchmark-for-2017/page-3