The problem is that I get some strange Display artefacts with fast motion. eg turning fast in shooters and fast cut scene sequences. It looks like the picture gets cut in 3 separate horizontal that are somehow not in sync. I wondered if I had a problem with the 3D settings like for example the alternate frame rendering mode for SLI.
Np. I had the same problem recently when I swapped to a 24" Sammy. I'm pretty sure it used to happen on my 17", but the response time was so slow that I didn't really notice it... as soon as I upgraded though, the effect became really noticeable and Vsync helped remove the issue w/o really impacting fps / visual quality.
Triple buffering is an updated feature/version of Vsync. The double buffering is what could lower frame rates to 37.5 FPS if the GPU dipped below 60 FPS. I believe, correct me if I'm wrong, that triple buffering makes it so it doesn't have to lock at the 37.5 and can keep a higher, constant frame rate in while maintaining the sync.
From my understanding, the double buffer of Vsync will lock at different intervals of FPS. 60 being the norm and the highest, but as soon as the GPU outputs less than 60 FPS, it immediately locks down to 37.5 FPS in order to keep the sync because of the way the buffering works.
There are some nice articles on the net that probably explain it better than I can. >_<