[QUOTE=DtrQ] Actualy, V-sync has some disadvantages too. On different PCs, game may acts differently, most critical exemple is variation of jump height in platformer depending on user's monitor freshrate[/QUOTE]
But that's a problem with the platform behavior, not with the technical aspects of v-synced or unlimited framerate mode.
I didn't work much with the platform behavior, but if the jump height depends on the monitor's refresh rate in v-synced mode, then how much more must this be influenced in unlimited mode! One player manages 1000 fps and jumps 100 pixels high, the other manages 100 fps and jumps only 10 pixels high?