I have an NVIDIA geforce 560 card - I pretty much nailed it to my satisfaction and am pretty happy with it - it matches my standalone blu-ray player now. The 23.972 that is "out of the box" drove me nuts, especially with more recent content that love to jerk the camera around a little bit when all people are doing are standing around and talking!
I was going to start a new thread to ask my question, but since it is getting discussed in this thread, I will ask here.
What is it that 23.972 rather than 23.976 does that drives you nuts? Provided I (or you) don't bitstream and use reclock, it shouldn't drop frames, or at least that is the impression that I got. I assumed the difference would be just a speed up or slowdown of frames delivered to my display device if the timing isn't exactly 23.976. Is that not correct? If it is correct, then my display device should be able to adjust by 4 parts in 24000 to compensate rather than seeing dropped or duplicated frames.
I also see posts where the timing isn't "rock solid" but changes slightly, maybe between 23.973 and 23.979 or so. I have assumed that that would manifest itself as a small jitter in the video signal, and if using reclock, maybe a small jitter in the audio to go along with it. Is that correct?
If not, I'd like to know what happens.
FYI, I have a dlp projector that will sync to 23.976 but I had to get it repaired to replace the 6x colour wheel and I'm not sure if slowing it down and speeding it up to 59.94 contributed to this or not. And yes, there is a slight slowdown of the colour wheel for 24fps playback. The wheel has 2 segments each for each colour so it does have to slowdown for 24fps from 60. So now I only run @ 60fps, since I find I don't notice the 3/2 cadence much. HOWEVER, I'd like to replace it and get back to a projector capable of proper cadence with 24fps material.
Also FYI, the clock in my current PC, either the mobo or graphics card or both are not overly accurate. I had problems with the PJ until I changed the refresh to 59.97. This was 1/2 way between the upper and lower ends where my PJ would reject the settings of the graphics card. This requires reclock to adjust signals by 700-800 samples/sec (or so it seems to claim). There is a noticeable pitch change in the audio when reclock makes its adjustment. However once that is done, things seem to run just fine within the confines of what I just set out. I don't have perfect pitch, so the change doesn't bother me.