Intel Xeon Guidelines

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Intel® Xeon™ Processor with 512 KB L2 Cache System Compatibility Guidelines
Xeon processor with 512 KB L2 cache operates at its tested frequency at initial power-on.
If the processor needs to run at a lower core frequency, as must be done when a higher
speed processor is added to a system that contains a lower frequency processor, the
system BIOS is able to effect the change in the core to system bus ratio.

Intel Xeon Specifications

General

Brand	Intel
Model	Xeon
Category	Processor
Language	English