The ATI Radeon IGP 320M is an integrated graphics solution developed by ATI (now part of AMD), primarily designed for laptops and entry-level desktops. The IGP (Integrated Graphics Processor) 320M is part of the Radeon IGP series and combines both the CPU and GPU functionality in a single chip, providing basic 2D and 3D graphics performance for tasks like web browsing, office productivity, and video playback.

The ATI Radeon IGP 320M CPU to AGP Bridge driver refers to software that enables proper communication between the CPU, the integrated GPU, and the AGP (Accelerated Graphics Port) bus. This driver is necessary for enabling AGP graphics acceleration, ensuring stable performance and proper operation of the integrated graphics. The AGP bridge driver helps in properly connecting the CPU to the graphics hardware via the AGP interface.