sougo :
Hy anort3 Can you suggest me some older intel cpu for overclock, please
The thing is with IPC improvements when you get an old i3 or Core2 to overclock you have to overclock as high as you can it to even be close to a new stock processor in performance.
The best i3 you could overclock was the i3 560 that ran at 3.33Ghz stock. You might get it to 4Ghz with a good ( ~$50 ) aftermarket cooler. It would still be slower than a stock i3 4130 that runs at 3.4Ghz stock. No need for an aftermarket cooler with the new i3 either. That's because the i3 560 is 4 generations old and each generation brings between 10-20% improvement clock for clock.
So at the same speed of say 3Ghz just to make it easy, an i3 4130 would be about 30%-40%...