Reaching 10 GHz for a CPU will never be done in silicon.
replyIt could be done if either silicon will be replaced with another semiconductor or semiconductors will be replaced with something else for making logical gates, e.g. with organic molecules, to be able to design a logical gate atom by atom.
For the first variant, i.e. replacing silicon with another semiconductor, research is fairly advanced, but this would increase the fabrication cost so it will be done only when any methods for further improvements of silicon integrated circuits will become ineffective or too expensive, which is unlikely to happen earlier than a decade from now.
Overclockers are pretty close.
replyWhat can be done by raising the power consumption per core to hundreds of watt, while cooling the package with liquid nitrogen, is completely irrelevant for what can be done with a CPU that must operate reliably for years and at an acceptable cost for the energy consumption.
replyFor the latter case, 6 GHz has been barely reached, in CPUs that cannot be produced in large quantities and whose reliability is dubious.
Having RAM read / write faster will be of way more benefit
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