Sw1 - Sw4 Processor Board Bus/Core Frequency Ratio - Compaq ProLiant DL760 Maintenance And Service Manual

SW1 - SW4 Processor Board Bus/Core Frequency Ratio

Processor board bus/core frequency ratio switches can be set manually or by the system ROM.
Figure 4-5 shows the location of the processor board bus/core frequency ratio switches.
Table 4-6 shows the bus/core frequency ratio switch settings.
IMPORTANT: The bus/core switches are delivered set at the Off position. This default setting allows the
ROM to automatically set the optimal speed for the buses. The server will not start if the switches are set
to a speed higher than the slowest processor.
NOTE: When all bus/core frequency switches are set to the Off position, the system ROM will
automatically set the bus/core frequency.
Bus/Core
Frequency
550
700
900
ROM Default
NOTE: The Intel Pentium III Xeon 900 MHz processors bus/core frequency ratio comes locked from Intel.
These processors automatically run at 900 MHz regardless of the bus/core frequency ratio switch
settings. Compaq recommends leaving these settings in the default positions.
CAUTION: Setting the processor switchbanks incorrectly can result in permanent damage to
the processor or in data loss.
CAUTION: The server will NOT boot if the Intel Pentium III Xeon processors are NOT the same
speed.
SW1–SW4 Bus/Core Frequency Ratio
Ratio
5 ½
7
Auto
Auto
Connectors, Switches, and LED Indicators 4-7
Table 4-6
SW 1 SW 2
OFF OFF
ON OFF
OFF OFF
OFF OFF
SW 3 SW 4
OFF ON
ON OFF
OFF OFF
OFF OFF