An interesting article At Nvidia site on the causes of stuttering and tearing

[RickRuski]

Just reading this piece at Nvidia site, it was mainly talking about the GTX680 but parts of the article will relate to all graphics cards. Looks like V/sync doesn't cure all problems but can create others.

http://www.geforce.com/whats-new/articles/introducing-the-geforce-gtx-680-gpu/