Dell U2312HM - 0.6 ms input lag

[bcass]

[ZellSF]

ATI help:

Use LCD Overdrive to improve the quality of video displayed on displays that are built into your computer. LCD Overdrive compensates for monitor response time or latency when displaying video using overlays. A slow response time can create a streaking effect that can occur on moving images displayed on a slower than optimal monitor. LCD Overdrive minimizes this problem.

LCD Overdrive enables a pixel to change from shade to shade more quickly by either boosting or decreasing the luminosity of the requested pixel value and applying the modified value to the pixel. This decreases the difference between the before and after pixel values and the amount of time required for the pixel to change state. You can immediately see the results produced by your LCD Overdrive settings in the Calibration Preview window. Too much or too little response time compensation will degrade the picture quality.

Optimal video is displayed on a monitor whose pixel response time is less than 16 milliseconds.
Note: LCD Overdrive is available only if it is supported by your graphics card.

I sort of doubt anyone actually uses this function.