a.panebianco1 :
I'm having issues with my GTX 670 graphics card. Orignally the card was in SLI with another 670 but i was facing micro stutter so I decided to go back to a single card. Now, It's showing extreme screen tearing across all games almost unplayable and extremely sore to the eyes until V-sync is enabled. FPS drops only occur when no FPS cap is set, eg. 200fps cap will lead to sometimes drop to 170. Temps only reach 60-75c.
GPU-z screenshot:
I don't see an issue. Let's assume you have a 1080p 60Hz monitor or TV. See that 60Hz? That's how many times the monitor refreshes its screen per second. A movie is many times displayed at 24FPS. Other times it's not. Can't cover all that stuff I've no clue about. Enter your PC. It's sending 170-200FPS and the monitor is capable of 60 FPS. This is how your monitor looks
. Now vsync comes to the party and this
happens. Vsync brings the framerate down to match the monitor's refresh rate so it's only displaying 59-60FPS at any time.
In short - When you over populate your screen with images you will notice and vsync helps with that.
Then there is the adaptive sync which you might know by G-sync(Nvidia) or Freesync(AMD). But, that's a story for another day.