System Specifications B-5
Chipset
The Intel 440BX chipset was designed for the Pentium II
processor. It consists of the Intel 82443BX PCI/AGP
controller (PAC) and the Intel 82371EB PCI/ISA IDE
Xccelerator (PIIX4E) bridge chip.
Intel 82443BX PCI/AGP Controller (PAC)
The PAC provides bus-control signals, address paths, and
data paths for transfers between the processor’s host bus,
PCI bus, Accelerated Graphics Port (AGP) and main
memory. The PAC comes in a 492-pin BGA package and
provides the following features:
Processor interface control
Processor host bus speeds of 66 MHz and 100 MHz
32-bit addressing
GTL+ compliant host bus
Integrated DRAM controller
Supports 100-MHz and 66-MHz synchronous
DRAM (SDRAM)
64/72-bit path to memory
Auto detection of memory type
Supports 4-, 16-, 64-and 128-Mbit DRAM devices
Symmetrical and asymmetrical DRAM addressing
Supports 3.3 V DRAMs
Accelerated graphics port interface
Supports AGP video adapters with data transfer
rates up to 133 MHz
Synchronous coupling to the host-bus frequency
