Processor-controller board component locations - (NF 8500R - Type 8681)

Processor-controller board component locations

A simplified layout of the processor controller board is shown in the following illustration.

Processor-controller board jumpers

(Below) Table 14 describes the jumper on the processor controller board.
The highlighted number in the table corresponds to the highlighted number on the illustration in (above) 'Processor-controller board component locations'.

Notes:

1.  Turn off the server, and disconnect the power cord before moving any jumpers.
2.  Be sure the processor bus-to-core ratio is set correctly.
    For example, if you have a 550 MHz processor installed and the system bus speed is 100 MHz (the default), be sure that the jumpers  are set to a bus-to-core ratio of 5.5 (550/100).
    See (below) Table 14
3.  Be sure to set the processor-core-frequency-selection jumper block for the slowest speed processor  installed in the server.
    For example, if the server has a 550 MHz processor installed and you install three 600 MHz processors,  set the processor-core-frequency-selection jumper block for the 550 MHz processor.

    MHz denotes internal clock speed of the processor only; other factors also affect application performance.

4.  For jumper settings for other speed processors, refer to the label on the inside top cover of the server.
5.  If you plan to use the processor serial-number security feature, you must change the setting of  the Processor Serial Number menu choice in the Advanced Setup menu of the Configuration/Setup Utility program. The default  value is Disabled; change this value to Enabled, as described in 'Processor serial number access'.

  -Attention- Be sure that the processor bus-to-core ratio jumper is properly set. If the processor bus-to-core ratio does not match the processor speed in the server, the server might operate with a degraded performance or not at all.

Processors listed in Table 14 are not necessarily available or planned for your model.
If a processor becomes available for your model, use these switch settings.

Table 14. Processor-controller board jumper 

Jumper name	Description
-3-	Processor-core-frequency-selection
	The default core/bus fraction is 5.5 (550/100 MHz).
	Pins 9/10, 11/12, and 13/14 are closed.
	Pins 15/16 are open.
	For the core/bus fraction 6.0 (600/100 MHz), pins 9/10, 11/12, and 13/14 are open.
	Pins 15/16 are closed.
	For the core/bus fraction 6.5 (650/100 MHz), pins 9/10 and 15/16 are closed.
	Pins 11/12 and 13/14 are open.
	For the core/bus fraction 7.0 (700/100 MHz), pins 9/10 and 11/12 are open.
	Pins 13/14 and 15/16 are closed.
	For the core/bus fraction 7.5 (750/100 MHz), pins 9/10, 13/14, and 15/16 are closed.
	Pins 11/12 are open.

Note:
Open = No jumper is present.
Closed = A jumper is present.

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