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Chapter 2. System board features
Chapter 2. System board features
This section includes information about system board features. For an illustration of the system board,
see “System board, Types 6584 and 6594” on page 13.
Pentium III microprocessor with MMX technology
PC 300PL Types 6584 and 6594 come with an Intel Pentium III microprocessor. The microprocessor,
which has an attached heat sink, plugs directly into a connector on the system board.
Features
The features of this microprocessor are as follows:
Optimization for 32-bit software
64-bit microprocessor data bus
133 MHz front side bus (FSB)
256 KB L2 cache integrated into the microprocessor
32-bit microprocessor address bus
Math coprocessor
MMX technology, which boosts the processing of graphic, video, and audio data
Cache speed is half of processor core speed
– 4-way set associative
– Nonblocking
L2 cache
The Pentium III microprocessor provides 256 KB L2 cache. The L2 cache ECC function is automatically
enabled if ECC memory is installed. If non-ECC memory is installed, the L2 cache ECC is disabled. (For
information on overriding the ECC memory settings, see the chapter about the Configuration/Setup Utility
program, in
PC 300PL User Guide
.) More information on this microprocessor is available at
http://www.intel.com on the World Wide Web.
Chip set control
The Intel 820 chip set is the interface between the microprocessor and the following:
Memory subsystem
PCI bus
IDE bus master connection
High-performance, PCI-to-ISA bridge
USB ports
SMBus
Enhanced DMA controller
Real-time clock (RTC)
4 Copyright IBM Corp. September 1999