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Supported Processors
This section describes the processors supported by the DX400-SN motherboard and how to install them.
The DX400-SN Motherboard only supports Intel Pentium Xeon processors with a Front
Side bus speed of 400 MHz . If two processors are installed, both processors must run the
same core frequency speed. Installing processors of different core frequencies speed may
damage the motherboard and processors.
The processor is packaged in a Organic Land Grid Array (OLGA). The Pentium Xeon Processors implement
integrated L2caches. The Pentium Xeon processor increases Performance for server and workstation
applications by adding either 512KB or 1MB of integrated L3 cache, which is also 8-way set associative.
The System Bus uses Source-Synchronous Transfer (SST) of address and data to improve performance and
enables data transfers at a frequency of 400MHz.This allows the processors to have 3.2GB/sec data transfer
rate .The control signals and bus phases are based on 100MHz system clock. This enhanced bus protocol
and internal architecture increases performance beyond previous levels.
The Processor Information ROM is a 128 byte read –only device that incorporates Intel processor specific
data .The OEM EEPROM, also known as the Scratchpad EEPROM, is a 128-byte read/write EEPROM in
which an OEM may program system specific data. The Thermal Sensor monitors the temperature of the
processor die.
Installing the Processors and Retention Mechanism
Single processor:
Install the processor in the socket marked ‘CPU0’
For Dual processors
the following values must be identical for both processors:
·
Host bus speed
·
Processor core frequency
·
Cache size
·
Cache type (either discrete or advanced transfer)
·
Operating voltages
Installing the retention on the motherboard.