System Board Set Features; Pentium Iii Xeon Processor; System Memory; I/O Expansion Slots - NEC EXPRESS5800/180Ra-7 User Manual

System Board Set Features

The following subsections provide a description of the system board set features.

Pentium III Xeon Processor

Depending on system configuration, each system includes one to eight Pentium III Xeon
processors. Each Pentium III Xeon processor is packaged in a Single Edge Contact
Cartridge Version 2 (SECC2). The cartridge includes the processor core with an
integrated 16 KB primary (L1) cache, a secondary (L2) cache (1MB or 2MB), thermal
plate, and a cover. The processor implements the MMX
processor's numeric coprocessor significantly increases the speed of floating-point
operations.
The processor external interface operates at a maximum of 100 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 sixteen 168-pin DIMM sockets. Memory is partitioned as
four groups of registered SDRAM DIMMs (PC100 compatible), each providing 72 bits
of 4 way interleaved memory (64-bit main memory plus ECC). Your system may
include from 256 MB to 16 GB of memory, using up to sixteen DIMMs. ECC
generation/checking is provided for detection and correction of memory errors.
Note:
Call your customer service representative for information.

I/O Expansion Slots

The server's expansion capabilities meet the needs of file and application servers for
high performance I/O by providing a combination of 32-bit and 64-bit PCI expansion
slots.
The system I/O board has eight full-length 64-bit, 33 MHz PCI connector slots
(see A in Figure 1-10) and two full-length 32-bit, 33 MHz PCI connector slots
(see B in Figure 1-10). The PCI 64-bit connector slots PCI#32 and PCI#31 can also
support bus speeds up to 66 MHz.
Note: The bus speed for the two 66 MHz PCI connector slots
(PCI#32 or PCI#31) is decreased to 33 MHz, if a PCI card is
installed into any one of the 64-bit PCI slots on that PCI bus.
PCI features:
Bus speed up to 66 MHz (PCI#32 and PCI#31)
!
Bus speed up to 33 MHz (all 64-bit and 32-bit PCI slots)
!
32-bit memory addressing
!
1-18 System Overview
Only use DIMMs approved for use in this server system.
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