It is running fine. Each core runs at the rated speed, e.g. 4.2Ghz....that does not mean that you multiply each core by 4.2.....that just means that the processor has 4 cores and singularly or all together the rated speed is 4.2Ghz. I would suggest that you read up a bit more on multi core processors to see how they really work, specifically in this case you should pay attention to AMD and not Intel.
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