
41
2 System Board
Chipset
Chipset
The Intel
®
820 chipset supports RDRAM memory technology and system
bus speeds up to 133 MHz, while delivering significant graphics
performance enhancements through its AGP 4x graphics interface. It is
comprised of the following:
• The 82820 Memory Controller Hub (MCH) provides the CPU interface,
DRAM interface, and AGP interface in the 820 chipset platform. The MCH
supports up to two processors. The table on
page 43
details the MCH chip
features.
•
The 82801 I/O Controller Hub (ICH) utilizes Intel® Accelerated Hub
Architecture to make a direct connection from the graphics and memory
to the integrated AC97 controller, the ATA66 controller, dual USB ports,
and PCI add-in cards. The table on
page 49
details the ICH chip features.
• The 82802 Firmware Hub (FWH) stores system BIOS and video BIOS, as
well as the Intel
®
Random Number Generator (RNG). The Intel RNG pro-
vides truly random numbers to enable stronger encryption, digital signing,
and security protocols. The table on
page 62
details the FWH features.
MCH
ICH
FWH