Please help me to find the bottleneck

[nerijus.st]

I built the new system couple weeks ago its just not running as fast as I expected it to. I tried multiple games (Witcher 3, Just Cause 3, Tomb Raider) but it feels like fps is not running up to its potential, barely reaching 60FPS or I have to turn the graphics down. I have SSD but all my games are installed on the HDD (7200 RPM)

What would be the biggest bottleneck in the build?

Intel 7700k + ARCTIC Freezer 13
Asus STRIX ROG 270G Motherboard
HyperX Fury DDR4 16 GB RAM
Asus ROG 1070 o8g GPU
Samsung 850 EVO SSD.

I'm running all games at 1920x1080 on Ultra High

I just thought that HDD I'm using is not new, I pulled it out of my dead laptop which I bought few years ago. Could that be the problem?

 

[Supahos]

Did you reinstall Windows after you put it in your new computer? If not that's your issue.

 

[faalin]

What cooler do you have for your CPU, the 7700k are well known for running hot and could be throttling because of it.

 

[nerijus.st]

Its a complete new build, and windows is installed in brand new Samsung EVO SSD. Only games installed on old HDD from laptop.

I'm using ARCTIC Freezer 13 to cool the processor!

 

[Supahos]

That isn't a very good cooler for your CPU. It's worse than the "minimum" Evo 212. I'd suggest.checking CPU temps while gaming. (Noone cares about idle temps)