Intel® Xeon® and Intel® Itanium® processor numbers are categorized in 4-digit numerical sequences, and may be preceded by a single letter to indicate power and performance class.
Example
This 4-digit processor number indicates both underlying performance-related features and whether the processor is for dual- or multi-processor systems. It also corresponds to the chipset numbering, making it clear which processor goes with which chipset.
A higher number within a processor family may indicate more processor features; more of a specific feature; or a change in architecture. Note that a higher number processor may have more of one feature and less of another.
| Processor Family | Number Sequence | System Type |
|---|---|---|
| Intel® Itanium® processor | 9000 | Multi-processor and dual-processor |
| Intel® Xeon® processor | 7000 | Multi-processor |
| Intel® Xeon® processor | 5000 | Dual-processor |
| Intel® Xeon® processor | 3000 | Single-processor |
Intel® Xeon® and Intel® Itanium® processor numbers may also include a single letter prefix to signify the power and performance class. The letter prefixes are defined as follows:
| Letter Prefix | Description |
|---|---|
| X | Performance |
| E | Mainstream (rack-optimized) |
| L | Power-Optimized |
¹ As Intel processors evolve and advance, Intel will integrate new feature technologies and capabilities that may increment the processor number.
