Since I use an "outdated" processor (i5-4460) and planning to buy 1660 ti, I saw that after checking this link: https://pc-builds.com/calculator/, I see that there will be 40% bottleneck. It seems not to be a small percentage. Maybe it would be good to do a CPU upgrade? My current mother: https://www.msi.com/Motherboard/H81M-P33/Specification, I can play games with lowest graphics, I just want to have a stable fps, because if I play games like pubg, I have 60 fps and after a few seconds it drops to 57, 48, 56, etc. And it makes my screen freeze for almost a second, which can be devastating. Also, I will not need any "overclock", because it seems useless for me.