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Intel® NUC5 i3;
Intel® NUC Kit NUC5i3MYHE, this model includes the Intel® Core™ i3-5010U Processor
Intel® NUC Kit NUC5i3RYK, this model includes the Intel® Core™ i3-5010U Processor.
Intel® NUC Kit NUC5i3RYH, this model includes the Intel® Core™ i3-5010U Processor.
These units share the same processor, for this model the processor base frequency is 2.10 GHz.
Intel® NUC5 i5;
Intel® NUC Kit NUC5i5MYHE, this this model includes the Intel® Core™ i5-5300U Processor.
Intel® NUC Kit NUC5i5RYH, this this model includes the, Intel® Core™ i5-5250U Processor.
Intel® NUC Kit NUC5i5RYK, this this model includes the, Intel® Core™ i5-5250U Processor.
The Intel® Core™ i5-5300U Processor has a base frequency of 2.30 GHz, and also has a max Turbo frequency of 2.90 GHz. For the Intel® Core™ i5-5250U Processor this one has base frequency of 1.60 GHz, but this unit can go up to 2.70 GHz with the max Turbo frequency.
In case you want to know more about the maximum turbo frequency, I would like to share with you that this frequency indicates the highest possible frequency achievable when conditions allow the processor to enter turbo mode. Intel® Turbo Boost Technology frequency varies depending on workload, hardware, software, and overall system configuration. Find more information here; Intel® Turbo Boost Technology 2.0