40 is my comfortable low point. 35-30 I can start to feel some lag in response (visual and/or input depending on the game). Some games are fine with it but others are not.

If you had a card which could supply vsync refresh 100% constant then it would be best to lock to your preferred vsync (60, 80, 125, etc) when using a CRT....

For an LCD things dont quite work the same. The are acceptable for gaming but do not perform in my opinion.


Of important note is that if you are capable of high FPS but limit the card to a specified FPS you may generate less power draw. Stability should not be affected by generating more FPS but it may be perceived as stuttering when going from high FPS to low FPS and back rapidly many times.

Possibly this is related to the micropausing issue with crossfire?