Monitor Refresh Rate and Lag Testing

Tools

Download the testing clock from here.

Testing

1. Hook up two monitors: 1) Your LCD to test, and 2) a CRT for reference, or another LCD for comparison. This can be done using two outputs from your video card, and running in mirror mode, or getting a splitter.
2. Fire up the clock program, and look for any differences.
3. Compare results and discuss the tool in this forum thread.