Q : Percentage-wise, how much faster will the Pentium 4 3.06 GHz processor be than the Pentium 4 2.8 GHz processor?Read it here
A : You'll see the usual solid performance increases when we add 200 megahertz. However, in some instances, you can see up to 25 percent performance improvements from Hyper-Threading Technology alone.
Q : Will the Pentium 4 3.06 GHz processor require a new power supply?
A : No. A standard ATX12V supply works fine. However, a motherboard should be rated by the manufacturer to support 3.06 GHz operation.
Q : When will consumers be able to purchase PCs powered by a Pentium 4 3.06 GHz processor?
A : Day of launch.
Questions and Answers : The Pentium 4 3.06 GHz

The Adrealine Vault has got an interview with Intel's Gabe Achanzar about the Pentium 4 3.06 GHz that the chipmaker will be providing for the CPL's upcoming Unreal Tournament 2003 competition :