Civilization IV v1.52 Patch Size: 45MB Total Downloads: 16909 Download Rank    Today: 588    This Week: 679    All Time: 381
v1.52 is a major upgrade to Civ IV and includes numerous optimizations for memory usage that should help performance on all machines but are tailored to especially improve performance on machines at or near the minimum specification. Note: This patch is for all versions of Civilization IV with the exception of the Direct2Drive version.

You can set different download speeds depending on whether you're playing a game, using your computer, or afk. Go to the Xfire application and click on Tools > Options > Files to find out more!