Dell PowerEdge M915 Information Guide

Dell Servers Information Guide - PowerEdge M915.
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AMD Opteron 4100, 4200, 4300, 6100, 

6200, and 6300 Series Processors 

Core Enumeration—Information 

Update
The core enumeration order on AMD Opteron 4100, 4200, 4300, 6100, 6200, and 

6300 series processors has changed from the following BIOS versions onwards.

With this latest BIOS update, the new core enumeration order follows a different 

sequence. It enumerates all the cores on the first processor and then enumerates 

all the cores on the next processor and so on. 
For example, in a system installed with two 8-core 6200 series processors with all 

cores enabled in the BIOS, the processor core enumeration order is as follows:

Processor 0: Cores 1, 2, 3, 4, 5, 6, 7, 8 
Processor 1: Cores 9, 10, 11, 12, 13, 14, 15, 16 

The new processor core enumeration order is designed to facilitate better power 

management and can be enabled by upgrading to the latest BIOS version for your 

system from 

support.dell.com

 

NOTE: Do not replace hardware. This is working as designed.

BIOS Version

Dell PowerEdge System

v1.9.3 

R415, R515 

v2.8.2 

R815, R715 

v2.10.2

M915 

2012 - 12

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