There[SQ]s no publicly known CPU with the designation "CPU X : System". This is likely:

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A placeholder or internal codename:

Companies often use internal names for CPUs during development that aren[SQ]t revealed to the public. "CPU X: System" could be one such placeholder.
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A custom or specialized CPU:

Some companies use highly customized CPUs for specific systems or applications. This would likely be an internal or niche product not widely advertised.
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Incorrect or incomplete information:

The source of the information might be mistaken or the name is only part of a larger, more complete designation.


To find out what "CPU X: System" refers to, you[SQ]d need to provide more context. Where did you encounter this name? What system or document mentioned it? Knowing the source will help determine its meaning.