Do you think you are not capable of assembling a computer? The game makes it not a problem. Learn what a computer is and look at the steps.
PC Building Simulator 2019 allows you to build and experiment with a computer.
What if money didn't matter and you could put together whatever you wanted.
Make the computer you want with the parts you want.
What you have assembled you can also try to see what its performance is. Choose the optimal cooling system.