How does vsync work?

[nokturrduk84]

My main question is, how it works? For example, if I have 144mhz monitor & I have let's say 80fps, will screen tearing appear? I mean it depends how much hz monitor has? Or it will be still locked on 60fps?

[Aniallation]

My main question is, how it works? For example, if I have 144mhz monitor & I have let's say 80fps, will screen tearing appear? I mean it depends how much hz monitor has? Or it will be still locked on 60fps?

If you have a 144Hz monitor, turning Vsync on will not allow the game to render at above 144FPS. If your graphics card can only run the game at 80FPS, you'll still get 80FPS unless you reduce refresh rate to 60Hz

[79wjd]

My main question is, how it works? For example, if I have 144mhz monitor & I have let's say 80fps, will screen tearing appear? I mean it depends how much hz monitor has? Or it will be still locked on 60fps?

Most 144hz monitors can be turned down to 100 and 120hz. 

Vsync makes the GPU wait until the monitor is ready to refresh--vsycn just limits your fps to the max your monitor is capable of. 

[RelentlessAF]

VSync or Vertical Sync forces the GPU to wait for the monitor to refresh before displaying a new frame. That way frames do not overlap over one another and cause screen tearing.

[DIV1D3]

Exactly what @Aniallation said, the FPS will not be allowed to go over 144, just so that there isn't 2/3 frames being displayed in one refresh of the display. 

[nokturrduk84]

Most 144hz monitors can be turned down to 100 and 120hz. 

Vsync makes the GPU wait until the monitor is ready to refresh--vsycn just limits your fps to the max your monitor is capable of. 

I know it limits the max my monitor is capable of, but I asked something else: What happens if for ex. I'm playing Crysis 3 with the fps of 80 on 144mhz monitor. Will it have screen tearing if I enable vsync?

[nokturrduk84]

If you have a 144Hz monitor, turning Vsync on will not allow the game to render at above 144FPS. If your graphics card can only run the game at 80FPS, you'll still get 80FPS unless you reduce refresh rate to 60Hz

I know that. I asked something else.

[79wjd]

I know it limits the max my monitor is capable of, but I asked something else: What happens if for ex. I'm playing Crysis 3 with the fps of 80 on 144mhz monitor. Will it have screen tearing if I enable vsync?

no

 

Tearing occurs because while the monitor is grabbing the frame from the graphics card, the gpu has already replaced the frame....Basically the monitor sees the first half of the first frame, and by the time it gets to the second half, the gpu has already replaced that frame with a new one.

[nokturrduk84]

no

Thx

[Aniallation]

I know it limits the max my monitor is capable of, but I asked something else: What happens if for ex. I'm playing Crysis 3 with the fps of 80 on 144mhz monitor. Will it have screen tearing if I enable vsync?

I know that. I asked something else.

It will be the same as Vsync being off, cause Vsync is basically just a frame rate limiter. So no.

[nokturrduk84]

It will be the same as Vsync being off, cause Vsync is basically just a frame rate limiter. So no.

So there's no need of vsync if fps is below the monitor refresh rate. Thx

[Sakkura]

If you run 80 FPS on a 144 Hz display, they will go out of sync and you will get tearing. If you enable vsync you'd be pegged at 72 Hz (as long as the computer can maintain 80 FPS, or really any FPS from 72 to 143) which would eliminate tearing because they would be in sync (obviously), with the monitor displaying each rendered frame twice.

[nokturrduk84]

One says it won't have tearing, another says it will. I'm confused now  :huh:

[Aniallation]

One says it won't have tearing, another says it will. I'm confused now  :huh:

If you get a stable 80FPS, best thing to do would be to set refresh rate at 72Hz and run Vsync.

 

I don't notice screen tearing, so I don't use Vsync myself

[the crunchiumo]

One says it won't have tearing, another says it will. I'm confused now  :huh:

v sync eliminates tearing and introduces stutter it makes the monitor wait for the gpu to render the next frame making you look at what is basically a picture

[Sakkura]

v sync eliminates tearing and introduces stutter it makes the monitor wait for the gpu to render the next frame making you look at what is basically a picture

 

He's talking about running without vsync, with FPS lower than refresh rate.

[the crunchiumo]

He's talking about running without vsync, with FPS lower than refresh rate.

oh in that case then tearing would occur unless for some odd reason the refreshes always match up with the frames.