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About Intel® Processor Numbers

The processor number is one of several factors, along with processor brand, specific system configurations, and system-level benchmarks, to be considered when choosing the right processor for your computing needs.

A higher number within a processor class or family generally indicates more features, but it may be more of one and less of another.  Once you decide on a specific processor brand and type, compare processor numbers to verify the processor includes the features you are looking for.

View processor specifications and compare processors >

View processor performance benchmarks >

View processor numbers for desktops and mobile >

Microserver, Server, and Workstation Processors

Alpha Suffix Description Example
C Microserver Intel® Atom™ processor C2750

Processor Family Product Line System Type
Intel® Xeon® processor E7 Multi-processor
Intel® Xeon® processor E5 Multi-processor
Intel® Xeon® processor E3 Single-processor

Alpha Prefix Description
X Performance
E Mainstream (rack-optimized)
L Power-optimized

Intel® Xeon® and Intel® Itanium® processor families and their number sequence

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

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