Overview
   The Intel 815 chipset family is a high-flexibility chipset designed to extend from the basic graphics/multimedia PC platform up to the mainstream performance desktop platform. The chipset consists of a 82815 Graphics and Memory Controller Hub (GMCH) and an I/O Controller Hub for the I/O subsystem. The GMCH integrates a system memory SDRAM controller that supports a 64-bit 100/133 MHz SDRAM array.

   The 82815 GMCH integrates a Display Cache SDRAM controller that supports a 32-bit 133 MHz SDRAM array for enhanced integrated 2D and 3D graphics performance. Multiplexed with the display cache interface is an AGP controller interface to enable graphics configuration and upgrade flexibility with the Intel 815 chipset family. The AGP interface and the internal graphics device are mutually exclusive. When the AGP port is populated with an AGP graphics card, the integrated graphics is disabled; thus, the display cache interface is not needed.