Abstract: A system and method for testing multiple components using a single host system is shown and described. A host system with a single advanced graphics port (AGP) is used to generate commands of a test routine to test a particular type of AGP processing component. A test fixture interfaces to the AGP port of the host system and provides the commands to each of a plurality of test components. The test components process the commands concurrently, generating results. The test fixture receives each of the results in turn and provides the results to the host system, allowing the host system to determine if the test components are functioning within particular parameters. The test fixture provides an interface to allow several test components to be tested as AGP master devices, over a single AGP port on the host system.