Apple has released another iMac patch, this time for systems running Mac OS X 10.4.

iMac Software Update 1.2.1 (Tiger) is for 20-inch and 24-inch aluminum iMac computers with 2.0, 2.4, or 2.8 GHz processors running Mac OS X Tiger.

The 13.3MB patch also improves the performance and reliability of graphics-intensive games and applications. The update is also available using Software Update, which will ask Leopard users to install the update prior to, not after, the software is installed.