What is Vsync and why everyone do benchmark disable it?

[gack2009]

What is Vsync and why everyone do benchmark disable it?

 

[rgd1101]

Cause vsync lower the fps
http://en.wikipedia.org/wiki/Screen_tearing

 

[gack2009]

Because it locks fps to 60 frames to remoe screen tearing as it results for smoother experience. Usually it lock 60 but if you rig has enough grunt and 120 HZ monitor you could lock it to 120. They disable this in benches cuz otherwise you wouldnt tell how many fps cpu, gpu etc gets

But what it does? better graphics? If i turn it on the game wont be smooth?

 

[gack2009]

Because it locks fps to 60 frames to remoe screen tearing as it results for smoother experience. Usually it lock 60 but if you rig has enough grunt and 120 HZ monitor you could lock it to 120. They disable this in benches cuz otherwise you wouldnt tell how many fps cpu, gpu etc gets

But what it does? better graphics? If i turn it on the game wont be smooth?

No its main purpose is to make everything smoother but it can also make overall performance slower if you components arent good enough. I never use vsync cuz i prefer higher frame rates and idk care about screen tearing. its mostly what people preffer

so if i have GTX 770 and run vsync on assassin's creed black flag can i run the game without lag.

 

[gack2009]

This gpu will not lag no matter vsync on or off

Great. Thank you.

 

[sachin1118]

This is a pretty old question, but in case someone is looking for the full answer, vsync basically prevents all screen tearing, but does not impact FPS (maybe 1-2 frames). However, it does lock your FPS at your monitor's refresh rate, which is 60 for most people. People disable it when benchmarking so they can get results above 60 fps (or whatever your monitor's refresh rate is).