Intel® Server Board Set SE8500HW4

Electrical Specifications

8.Electrical Specifications

8.1Power Generartion

Input power to the Mainboard is 12V and 3.3Vstby; all other required voltages are generated by Voltage Regulator Down (VRD) circuits and Voltage Regulator Modules (VRMs) on the Mainboard. The processor core voltages for processor sockets 1 and 2 are generated by VRDs and processors 3 and 4 get their core voltage from VRMs. One VRD generates the cache voltage for processors 1 and 2, and a VRM 9.1 provides cache voltage for processors 3 and 4, when those sockets are used by 64-bit Intel® Xeon™ Processors MP with up to 8MB L3 cache.

Figure 13 illustrates the power generation in the Intel® Server Board Set SE8500HW4.

Figure 13. Power Distribution Block Diagram

Revision 1.0

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Intel order number D22893-001