New CPU question

[imacrazyballoon]

I recently built a computer and I was wondering if i needed to do anything special if I wanted to upgrade a part of it later. would it be possible to upgradee just one of the following: motherboard, CPU, PSU, etc.

 

[SOcRatEs]

Hello

Need to know what these are before recomending anything.
make, model etc.
Generally there's room for improvement some where there and on most systems.

G'Luck