Hello. I have Z390 motherboard and I'm wondering whether it is worth to buy CPU i9-9900k and GPU rtx 3080 super for that, or it is gonna be better to upgrade my motherboard and buy processor from newest generation. I have this question in my mind, because I'm considering if I need newest CPU if I use my pc just to play games, and one thing I like to have is 140 fps in 2k.