Speed Mod is a Warlords mod for Civilization IV. It requires Warlords patch 2.08 to run.
Speed Mod doesn't change any of the functionality of Civilization IV, everything is exactly the same as in the core game. But it has been optomized for speed. Although it improves the games performance in all areas the biggest difference players will notice is in the delay between turns, which can drop to a fraction of the normal time. If you are tired of waiting between turns, try Speed Mod.
Forum Thread: http://forums.civfanatics.com/showthread.php?t=217981