10.9 vs 10.10 performance ?

To mac users: can someone tell me if C8 under 10.10 has greater performance than C8 under 10.9.

I am still on 10.9 but if there would be a positive performance difference under 10.10, i would upgrade my system.

Hey vanhaze, still on 10.9.5 because of what I heard to many things still not working or making trouble on 10.10. Same with iOs. To many apps not working or crashing on iOS8. So Yosemite must bring also for me a reall performance boost to change. Worst updates ever Apple did with those last updates.