There seems to be only one public test of the Macmini9,1. Sometimes GeekBench is not accurate on the clock speeds. Take the clock speed with a little skepticism

There seems to be only one public test of the Macmini9,1. Sometimes GeekBench is not accurate on the clock speeds. Take the clock speed with a little skepticism until more results are posted. I can't see why the system with the best cooling would be 3.04 GHz instead of 3.2 like both the MacBook Pro and Air.