But it´s just ridiculous that they can´t make higher clock speeds for the 12-core.![]()
It's how multiple cores and turbo has works. It's not ridiculous but is simply a function of physics, specifically dissipating greater heat in an identically sized chip. It's also why getting more cores is not recommended unless you're going to actually use them as non-threaded jobs will actually be slower.
See this insightful piece by Mr. Arment: http://www.marco.org/2013/11/26/new-mac-pro-cpus
Cheers.