Pentium Iii Processor; System Memory; Real-Time Clock/Calendar; Bios - NEC EXPRESS5800/120Ed User Manual

Pentium III Processor

Depending on system configuration, your server includes one or two Pentium III
processors. Each Pentium III plugs into a ZIF (Zero Insertion Force) socket on the
system board. The processor includes a numeric coprocessor, a 256KB L2 cache and
operates at a bus speed of 133MHz. The optional second Pentium III processor
enhances performance and enables symmetric multiprocessing (SMP).

System Memory

The system board contains four 168-pin DIMM sockets. Memory is partitioned as four
banks of SDRAM registered DIMMs (PC133 compatible), each providing 72 bits of
noninterleaved memory (64-bit main memory plus ECC). Your system may include
from 64 MB to 4 GB of memory, using up to four DIMMs.
System memory begins at address 0 and is continuous (flat addressing) up to the
maximum amount of DRAM installed (exception: system memory is noncontiguous in
the ranges defined as memory holes using configuration registers). The system
supports both base (conventional) and extended memory.

Real-Time Clock/Calendar

The real-time clock provides system clock/calendar information stored in a non-volatile
memory (NVRAM). The real-time clock battery provides power backup for the real-
time clock.

BIOS

A BIOS and Setup Utility are located in the Flash EPROM on the system board and
include support for system setup and Legacy device configuration. A number of
security, reliability, and management features also have been incorporated to meet vital
server needs.
System Overview 1-7