hi.

what is diffrenc between Refresh Rate and Frame Rate?

thnx.

i guess refresh rate more often gets used for monitors (for example tfts often use 60hz) and frame rate more often gets used for specifying how many frames per second a 3d engine renders but actually both can be used interchangeably i would say.

1.what does they do exactly?

2.what is respect of them?why frame rate cannot be more from refresh rate?i read the help but i did not understand.

please help.
thnx.

the engine frame rate can be higher than the monitor refresh rate but of course you won't see the additional images on the monitor and there can be various synchronization issues.

here is an article about it:
http://www.anandtech.com/showdoc.aspx?i=3591&cp=18

HELP:
In fullscreen mode, DirectX keeps the frame rate always in sync with the monitor frequency between 60 and 80 Hz in order to avoid tearing artifacts. The screen refresh is artificially delayed for matching the time when the monitor has finished its video cycle. Thus you'll never get a higher frame rate than your monitor can display. Your frame rate will be an integer division of the monitor frequency (such as 60, 30, 20, or 15 Hz when the monitor frequency is 60 Hz). When the frame rate is close to the monitor frequency, a small change of the rendering time will cause the frame rate to suddenly jump from 60 to 30 fps or vice versa.

what is the real?i confused.

please help guys...

I am confused about what your question is? What exactly is your problem?

In window mode you can get higher frame rates than the monitor can display. In full screen mode you can't get higher frame rates with most video drivers I know.

why FPS is diffrenc in window mode and full screen mode?Thanks.