What is V Sync?

koolman_

Distinguished
May 2, 2001
69
0
18,630
hey can anyone tell me what is V Sync and what performance effect it has if enabled or disabled
i ahev a video driver that let V Sync(when turned off) increase or decrease in steps what number should i use 2 get max performance?
and 1 more question how do i display Frame rate in Quake 3
THX

"Giving Up is the step towards failure"
 

svol

Champion
Vsync stands for vertical sync, and has to do with your monitors refresh rate. It's better to disble it in your drivers to get max results.
For more info about video benchmarking (also with Quake 3) take a look at this article:
<A HREF="http://www.nvnews.net/articles/benchmarking.shtml" target="_new">http://www.nvnews.net/articles/benchmarking.shtml</A>.

My case has so many fans that it hovers above the ground :eek: .
 

Smilin

Distinguished
Oct 3, 2001
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Vsync - means tell the video card to wait for the next full screen refresh before drawing. If you have a vertical refresh rate on your monitor of say 85hz and you're drawing to the screen at say 100 frames per second you'll get "tearing" in the display. This phenomenon is difficult to see even when you're looking for it so most people turn off vsync just to stop the monitor refresh rate from "holding back" your fps. In truth it doesn't make much of a difference unless you are benchmarking.

The console command to see the framerate in quake 3 is:

/cg_drawfps 1

you should also check out:

/com_maxfps 125

Q3 by default "caps" your fps at 85...stops the video subsystem from hogging the cpu from the network and other subsystems. Setting the "cap" to 125 will allow you to do certain moves you could not otherwise do with quake (like the megahealth jump on q3dm13).

Most questions relating to video performance and q3 would be better answered on the forums at http://www.quake3world.com

Happy fragging :)
 

Matisaro

Splendid
Mar 23, 2001
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V-sync is the origional name of N' Sync, see the producers felt the v gave them a girly feel, so they changed it to N, and the rest is history.

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