What is screen tear
Vsync, also known as vertical sync, is a technology originally designed to adapt to the limitations that plagued older displays, eliminating screen tearing that can occur when the display's refresh rate is out of sync with the output. GPU frame rate.
When your GPU generates a frame rate higher than the display refresh rate, screen tearing may occur, causing two frames to be displayed at the same time. One way to solve this problem is to use Vsync technology, which is a built-in feature that limits your FPS to the refresh rate of the display.
Although Vsync is a function suitable for eliminating screen tearing, it has its limitations. In addition, with the introduction of AMD and Nvidia's proprietary variable refresh rate technology, is Vsync worth continuing to use?
In the next article, we will explain exactly what Vsync is, how it affects game performance, and whether you should use it.
To better understand the impact of vertical sync on your gaming experience, we must first understand how it actually works. VSync is the original synchronization technology introduced by GPU developers to help solve an annoying visual artifact called a screen tearing.
Screen tearing occurs when your GPU sends more frames per second to the monitor than it can handle. This causes two frames to be displayed during a screen refresh, and the annoying tearing can exponentially reduce the feeling of immersion.
To eliminate this situation, GPU developers created VSync, a synchronization technology. The working principle of vertical synchronization is to synchronize the refresh rate of the display with the frame rate output of the GPU. Like variable refresh rate technology, VSync limits its FPS to the maximum refresh rate of the display. Although this is very useful for reducing screen tearing, its use can produce other very obvious screen defects.
When VSync first appeared, many monitors could only handle a maximum refresh rate of 60 Hz, which is considered the entry level of today's standards. This is fine when your GPU can push more than 60FPS, but when your FPS is less than this value, there will be input hangs and lags.
You will see that when VSync is enabled, your monitor waits for the GPU to send a new frame before updating the display. So when your FPS is less than 60 (like 20), your monitor has to wait a long time to update the image on the screen.
Input lag caused only by this VSync side effect can cause the delay to increase to more than 100 milliseconds. For competitive game players, this is simply unacceptable.
Like most technologies today, vertical synchronization has many advantages and disadvantages. Here are the ones we think are the most significant: The main benefit of
VSync is that it integrates with your graphics card, and of course, it is free. This is an option in the Nvidia or Radeon card settings that you can enable or disable. Whether
is enabled or disabled depends on your preference and the game you are playing. When they are turned off, the GPU and display will inevitably get out of sync, causing the screen to tear, which is unbearable for most gamers. As we mentioned earlier, activating this feature will match the refresh rate and FPS to produce smooth results.
Example: If you are playing The Witcher 3, which is a game with pretty impressive graphics, you probably want to experience as little screen tearing as possible. In this case, vertical sync is a very viable option for a more fluid game. The
bottom line is that vertical sync is very useful for certain single player games, but only if the screen tears are very obvious. Regardless, you will often find it difficult to see screen breakage on monitors above 120Hz. The
VSync problem is indirect and largely depends on the game you are playing and the monitor you are using. For example, if you are using a 60hz monitor, turning on VSync will limit your game frame rate to 60fps. If the game is a single player and runs at 60fps without crashing, then VSync may be a great choice for buying a new monitor. However, if you use a 144hz monitor and load a game with powerful graphics, this may reduce its performance and you will experience some tearing issues because your GPU and monitor are sometimes out of sync.
This happens because VSync forces your graphics card to wait for the display to be ready to receive the next frame before sending it out. Unfortunately, if performance drops, VSync will cut the screen refresh rate in half until it syncs with the GPU. So to reiterate, if you're using a 60Hz monitor and experiencing a crash, your gaming frame rate may drop to 30fps, resulting in stuttering.
mentioned earlier that it may be better suited for single player games, because VSync sometimes increases mouse input lag significantly. Whether you are playing a competitive FPS game or a single player FPS game, this lag will be very obvious and offensive. It is worth noting that if triple buffering is enabled in the game, the input lag can be greatly reduced, but in the end, VSync is not needed in shooter games like CSGO or games with lower graphics quality like LOL.
If you want to eliminate screen tearing, you should consider some better alternatives to VSync. Some of these alternatives are just enhanced versions of VSync, which can be changed in your GPU settings. However, others may pay the price.
Enhanced Sync is actually an "enhanced" vertical sync solution made by AMD, which can only be used if you have a Radeon card. The problem with VSync is that when the FPS is lower than the monitor's refresh rate, it will stutter or experience the famous VSync input lag
Sync will not replace VSync, it works with VSync. When the frame is normal / high, VSync starts working and the frame rate is limited to match its refresh rate.
Fast Sync is just an Nvidia upgrade to VSync, which is exactly the same as AMD's Enhanced Sync. The only difference is the hardware of your machine.
These alternatives are more responsive than simply turning on VSync, but they all have more input lag than turning off vSync entirely. If you're looking for a money-saving option, then these advanced versions of VSync may be enough, and it's worth a try before considering the expensive updates you'll see below.
Gsync is an adaptive synchronization technology created by graphics giant Nvidia. This technology is designed to help prevent screen tearing. It is achieved by dynamically synchronizing the display refresh rate with the frame rate of the graphics card, ultimately achieving a silky smooth gaming experience.
To learn more about GSync, please visit our short article here.
Freesync is another adaptive synchronization technology, but developed by AMD. Freesync has the same functionality as Gsync, but its quality may vary depending on the monitor on which it is implemented. Unlike Gsync, it is open source, which means that the display does not require developers' own proprietary modules, thus creating a competitive market and reducing costs.
To learn more about FreeSync, please visit our short article here.
Vsync may cause headaches for some people, and the reason is clear. There is no clear answer as to whether you should turn it on or off (that's why this option exists), and if you want to see any benefits, it largely depends on the environment.
If you keep getting more frames than the refresh rate, you can turn on VSync because you won't experience any drop in FPS. To get the most out of your game, it is best to disable VSync. Turning off VSync is most beneficial for anyone using a 60Hz monitor or lower spec PC, but it will feel a tear.
VSync activation depends on the viewing experience provided by the monitor. When enabled, triple buffering should be used to compensate for possible input lag and FPS drop. Although this improves performance slightly, it is still not as effective as turning off VSync.
If you don't like the shortcomings of VSync, then Gsync and Freesync are worth studying. Having said that, if you want to try to fix the tearing problem for free, please try to turn on Enhanced or Quick Sync in the settings of your respective graphics card. You can try a smooth game at any time, if you experience significant input delay or performance degradation, you can turn it off again at any time, so please try it.
With it, our fast VSync wheel and what it is. I hope this guide makes VSync easier to understand and guides you whether you should actually use it when playing games.
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