How do Vsync affect your gaming?

How do Vsync affect your gaming?
I have noticed that whenever I disable the Vsync on my computer then the game runs smooth but some of the times I get the image tearing as a side effect of this. On the other hand, if I keep the Vsync enabled then the image tearing goes away but the game does not run as smooth as compared to turning it off. I would like to know that how does the Vsync affect the game performance. If you can give me some suggestion on this then please let me know that. I am sure that this is going to be a very informative thread for all the other users also who is searching for the same.

#2
11-04-2012
Chakradevroy
Member

Join Date: May 2011
Posts: 1,587
Re: How do Vsync affect your gaming?
I would like to tell you that the VSync is very common in almost all games. This option modifies the number of frames displayed in the movement of the game. If you have this option enabled and the game will run slow for you. This is also responsible for managing the gaming motion sharpness activate but many of the times this is not a noticeable change to the game.

Some monitors can be seen that the time of moving the camera in a video game quickly produces a line down the monitor, this could sometimes be annoying and we have to enable VSync which makes the amount of images generated by the graphics card close to the refresh rate monitor, typically 60Hz (frames per second). In some of the cases, when the game is very heavy, tries to generate graphic images half while maintaining a constant frequency about 30Hz then Vsync plays a very important role.

#3
11-04-2012
GaganGang
Member

Join Date: May 2011
Posts: 1,532
Re: How do Vsync affect your gaming?
In order to display an image, must make many calculations based on data that sends the CPU. When completed the calculation on an image it stores it in memory called a frame buffer before being displayed on the screen. This memory contains two default images (double buffering): one that is currently sent to the screen and the one currently in GPU Computing. Unfortunately, communication with the screen is at interval (or frequency) that is generally fixed at 60 frames per second (Hz), thus it is not possible to send each image in graphics card to complete the calculation in real time. When a new image is ready in the frame buffer circuit that handles the connection to the screen, it changes that image and frzees the old image to the GPUs that can start calculating the next the screen that can arrive at any point of the previous frame. If there are a few lines at the start then this does not matter. If you take a picture of the screen, we see that there are two pictures on the screen: a piece of the old image with a piece of new. The connection between these two images (which is located where the scanning of the screen done when sending the new image) will create a kind of horizontal line also called ripping which is really obviously not aesthetic. This phenomenon can be amplified when the PC is fast enough to calculate multiple images in the range of a screen refresh rate. Thus there can be several pieces of screen images and therefore more "tears". This is what happens when the V-sync is disabled.

#4
11-04-2012
DougWison
Member

Join Date: Jul 2011
Posts: 1,453
Re: How do Vsync affect your gaming?
When a new image is ready in the frame buffer, it waits for sending the last frame before sending the new and the screen does not always display one image at a time. The problem is that having only two locations in the frame buffer, the GPU has to wait until the location of the old image is released (that is to say it is completely sent to the screen ) before they can start working on the next image. This will cause a loss of performance. This is the triple buffering (triple buffering): in this case the frame buffer can contain three images, the one currently displayed on the screen, ready for the next and the one currently displayed in the calculation GPU. The GPU can get ahead because it does not need to wait for the display of the image that is completed in court to begin these calculations, unfortunately this is at the expense of response time between a mouse movement and display of result.

#5
11-04-2012
Ashley Parker
Member

Join Date: Jul 2011
Posts: 1,418
Re: How do Vsync affect your gaming?
Advantages and disadvantages of V-sync

Advantages:
Deletes rips images
When the PC is fast enough that the number of frames per second >= frequency of the screen gives the best smooth as possible
When the PC is powerful enough (or the game a bit old) to greatly exceed the refresh rate of the screen, the V-sync can reduce the load because the PC is limited by the refresh rate, so it will consume less heat and make low noise.
In-SLI / CF can increase the fluidity and avoid jerks related to sync between the GPU.
Disadvantages:
In double buffering, when the PC is not able to provide the image time it must wait for the next refresh and then lose in performance, this loss is greatly reduced by enabling triple buffering but always present especially when the game is very greedy.
The V-sync-introduces a latency between user interaction and display, this problem occurs mainly when triple buffering is enabled.

#6
11-04-2012
Shae
Member

Join Date: Jul 2011
Posts: 1,596
Re: How do Vsync affect your gaming?
If you’re in a game where frame rate per second average is still below the refresh rate of your screen then leave it disabled unless you can not stand the tears. If your frame rate per second on average around the refresh rate of your screen then select the V-sync with the tripple buffering unless you feel the latency of response, in this case turn off V-sync. If your frame rate per second average is higher than the refresh rate of your screen then select the V-sync without tripple buffering. You will get the best flow possible. One last thing about the games (or applications) offer some parameter directly in the options, in which case use this option rather than forcing the driver if the option is not present in the game then drivers can be used.

#7
11-04-2012
Wyl
Member

Join Date: Aug 2011
Posts: 1,477
Re: How do Vsync affect your gaming?
VSync stands for "Vertical Sync". To understand what is meant by this, one must know the workings of the monitor. On the graphics card there is a so-called RAMDAC. This is the digital to analog converter. This component (which has long been integrated directly into the GPU) will read from the graphics card frame buffer and converts the local color values into an analog signal. The read speed of "scanout" depends directly on the monitor frequency. Suppose we take the resolution 1024x768 at 85 Hz, then you have a second to 1/85-tel per image. During this period, 768 lines are read. The line is built from the CRT monitor using a cathode ray. At the end of the tube is a cathode, where electrons are released and accelerated by means of electromagnets.

#8
11-04-2012
Bubboy
Member

Join Date: Aug 2011
Posts: 1,487
Re: How do Vsync affect your gaming?
The big disadvantage of VSync is not cutting off the "top", but the large performance loss if your default fps is indeed close to the refresh rate or even slightly lower. To capture this effect, there are triple buffering. Triple buffering uses two buffers back, we call them A and B. The first image is rendered in backbuffer A. It is finished, the next image comes immediately back buffer B (ie the back buffer are swapped). If the RAMDAC begins the new image, it automatically takes the date back buffer. That is, at 90 fps and 100 Hz and 90 frames per second are displayed. I hope that this will be helpful to you to get it understood.

#9
12-04-2012
Sudhamay
Member

Join Date: Nov 2009
Posts: 507
Re: How do Vsync affect your gaming?
VSync also called vertical synchronization prevents graphics cards to update the image data while the screen builds up the image. When changing the image data during the image build, display errors may occur and this will prevent VSync. Anti-aliasing only for service so that it does not cornered and pixelated .. in every game they are in present, there is still the most "advanced" and they should then be put even need video card ne good, so these options can also be used sensibly.