i5 8600k worthy upgrade over a 4690k?

[DBZfreakMBB]

I've been using a 4690k for 2 and half years now, I'm just wondering if you guys think it will make sense to upgrade since the new i5s have 2 extra cores now, and if yes what AIO water cooler do you guys recommend to buy for overclocking?

 

[silverfeather]

http://cpu.userbenchmark.com/Compare/Intel-Core-i5-8600K-vs-Intel-Core-i5-4690K/3941vs2432

the great difference between them is the 2 extras cores, if you do a lot of multithread, it's worth it, if not, i dont think so

 

[fluffa]

Acer CB280HK 4K 28 inch, if your gaming @ 4k I doubt it. you will be GPU bound at that res