SmartGart™ is ATI's proprietary diagnostic tool that determines the user's optimal AGP settings to ensure maximum stability. One significant cause of system hangs is the quality of the AGP bus. Since there are many types of AGP chipsets controlling the bus, the compatibility of the AGP bus varies, and it is difficult to pre-determine its quality through the display driver. With SmartGart™, the driver will automatically test the AGP compatibility upon its initialization and dynamically switch to or set up the AGP bus based on the test results. The end result is a more stable system.