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Screen Tearing FREE screen?

post #1 of 6
Thread Starter 
hello guys, are there any screens that have absolutely NO screen tearing at all when vsync is off? Whether it's 43Fps or 117Fps anything above/below 60fps?

Do 120Hz monitors get rid of screen tearing? What causes it? a lower frequency or response time?

I currently have a BenQ G2420HD (60hz) it boasts a 2ms response time yet it still screen tears.
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post #2 of 6
Afaik screen tearing can always happen if vsync is off.
The screen sees the image that's in the output buffer of the video card. If the video card overwrites the contents there while the screen is reading that data, tearing occurs.
The refresh rate doesn't really matter though I guess tearing at 120FPS/Hz is probably less noticable because the next image is displayed way sooner than at 60FPS/Hz
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post #3 of 6
It is impossible to make a monitor that will not tear with vsync off. Tearing occurs because the video is not synchronized with the display. To completely eliminate tearing you would have to implement some form of vsync on either the monitor or the computer.

You can however reduce tearing to make it less noticeable. The higher your framerate (your fps, not the monitor refresh rate), the smaller the difference will be between each frame. So if it really bothers you, try turning down the video settings and/or resolution. You will see the tearing at 300fps is not nearly as bad as tearing at 60fps.
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post #4 of 6
Thread Starter 
Would it be worth investing in a 120hz monitor then? i just Bought the BenQ like 1 month ago...
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post #5 of 6
Quote:
Originally Posted by jpz View Post

The higher your framerate (your fps, not the monitor refresh rate), the smaller the difference will be between each frame. So if it really bothers you, try turning down the video settings and/or resolution. You will see the tearing at 300fps is not nearly as bad as tearing at 60fps.

Actually, you get more tearing when you have higher FPS. If you're running at >60fps, and the monitor is only 60hz, a new frame will be sent before the monitor can display the one before it, causing the tearing. With an 120hz monitor, you can run at 120fps and the monitor is able to keep up with displaying new frames without tearing.
If you're running above 120fps on a 120hz monitor, you may still get tearing, but I don't know for sure, and I'd like to hear someone else's input on this.
post #6 of 6
No, what happens with high fps is you get lots of small tears instead of one giant tear if you image. if you use a 120hz display and your game is running at 60 fps you will get some wicked flickering because every odd frame will be torn. Tearing occurs because you computer draws a new frame and sends it to your monitor while the monitor is still drawing the previous frame. Buying a different refresh rate monitor or locking the framerate will not help. The only way to fix it is to synchronize the computer and monitor so the computer sends each frame right after the monitor finishes drawing the last one.
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