Specifications

Voltage Regulator Modules (VRMs)
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5. Attach the heatsink to the processor with five 6-32 X 3/8 screws, and tighten to 8-10
inch-pounds.
Voltage Regulator Modules (VRMs)
Follow the instructions in this section to remove and install a VRM.
Up to seven VRMs provide power for processors. Table 3-1 shows the relationship
between VRMs and processors.
VRMs 1 through 4 are embedded in the baseboard. Additional VRMs plug into
connectors 2 though 4 on the baseboard. You must use a specific number and connector
population sequence of VRMs for each combination of processors and termination
boards. Table 3-2 lists the required number and location of VRMs for each potential
processor.
Table 3-1 VRM/Processor Power Sequencing
VRM # VRM provides power for Description
1 (Embedded) Processor #1 Processor core power only
2 (Embedded) Processor #1 GLT (FSB reference)
3 (Embedded) Processor #1 and #2 L2 cache power only
4 (Embedded) Processor #3 and #4 L2 cache power only
#2 Connector Processor #2 Processor core power only
#3 Connector Processor #3 Processor core power only
#4 Connector Processor #4 Processor core power only
Table 3-2 Processor/VRM Population Sequencing
If you have a processor in connector VRM in connector #
1 None. All required VRMs are embedded in the baseboard.
1and2 2