Dell AMD Opteron 4100, 4200, 4300, 6100, 6200, and 6300 Series Processors Core Enumeration— Information Manual User Guide
Summary
This technical information update addresses AMD Opteron processor core enumeration changes in Dell PowerEdge systems. The document explains modified core enumeration sequences for AMD Opteron 4100, 4200, 4300, 6100, 6200, and 6300 series processors starting from specific BIOS versions. The new enumeration order sequentially lists all cores on the first processor before proceeding to subsequent processors, designed to improve power management capabilities. It applies to Dell PowerEdge R415, R515, R815, R715, and M915 systems. Target users include system administrators, datacenter engineers, and IT professionals managing Dell PowerEdge servers with AMD Opteron processors.
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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. BIOS Version Dell Power Edge System v1.9.3 R415, R515 v2.8.2 R815, R715 v2.10.2 M915 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.
Page Summary Contents For Dell AMD Opteron 4100, 4200, 4300, 6100, 6200, and 6300 Series Processors Core Enumeration— Information Manual User Guide
Manual Details
| Brand | Dell |
|---|---|
| Pages | 2 |
| File Size | 40.37 KB |
| Published | June 29, 2026 |
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Frequently Asked Questions
Which BIOS versions affect the core enumeration order?
The change affects systems running Dell PowerEdge with specific BIOS versions (v1.9.3 R415, v2.8.2 R815, or v2.10.2 M915).
What is the new processor core enumeration order after updating the BIOS?
It now enumerates all cores on the first installed processor before moving to all cores on the next processor.
Why should I update the BIOS regarding core enumeration?
The updated process facilitates better power management capabilities of the system.
Do I need to replace any hardware if the core enumeration order changes?
No, do not replace any hardware; this change is working as designed.