Pentium Iii Processor; System Memory; I/O Expansion Slots - NEC EXPRESS5800/120Lf User Manual

Pentium III Processor

Depending on system configuration, each system includes one or two Pentium
processors. Each Pentium III processor plugs into a standard PGA370 connector. The
processor comes with either 256K or 512K cache.
When two processors are installed, both processors must be of identical bus and core
speed. When only one processor is installed, the other processor socket must have a
terminator card installed.
The processor external interface operates at a maximum of 133 MHz. The second-level
cache is located on the substrate of the processor cartridge. The cache includes burst
pipelined synchronous static RAM (BSRAM).

System Memory

The system board contains six 168-pin DIMM sockets. Memory is partitioned as three
banks of registered SDRAM DIMMs (PC133 compatible) that must be populated in
pairs, each providing 72 bits of buffered two-way interleaved memory (64-bit main
memory plus ECC). Your system may include from 256 MB to 6 GB of memory, using
up to six 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.

I/O Expansion Slots

The server's expansion capabilities meet the needs of file and application servers for
high performance I/O by providing PCI expansion slots.
The system board has four 66 MHz 3.3 V PCI connector slots (Figure 1-7, A and C)
that can accommodate 64 bit PCI cards and two 33 MHz 5.0 V PCI connector slots
(Figure 1-7, B) that can accommodate 32 bit PCI cards.
PCI features:
Bus speed up to 66 MHz (Slots 1, 2, 5, and 6), 3.3 V signaling
!
Bus speed up to 33 Mhz (Slots 3 and 4), 5.0 V signaling
!
32-bit memory addressing
!
Burst transfers up to a peak of 528 MB/s (64 bit, 66 MHz PCI)
!
8-, 16-, 32-, or 64-bit data transfers
!
Plug and Play ready
!
Parity enabled.
!
1-10 System Overview
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III