Ryne23 :
I'm kind of new at all this, I just built my first pc. Can you explain all this to me? Also, having the highest FPS possible isn't the best choice???
Your monitor refreshes at a certain rate. For example let's say mine's refresh rate is 144Hz. This monitor can only show up to 144 frames per second. No matter if you get 150 or 1500 fps, it will show only 144. So no reason to have more than that. V-sync is a frame limiter that limits framerate to the max your monitor can show.
Extra random info : If you have way too much fps, like 700 or more, it bugs out. Computers can't handle it and show bad frames, weird frames and other random stuff. I tried running crysis 3 on 8k display on my university's supercomputer. Got ~1600 frames at...