The introduction of Hypher-Threading technology makes us believe that the new 3.06 GHz model is an entirely new CPU, this is not the case. It's the same as the other Northwood based Pentium 4 processors.

Task Manager shows two CPU usage histories with Hyper-Threading

In fact there are some rumors on the web that with the help of a modified BIOS Hyperthreading was enabled on 2,4 and 2,5 GHz processors. Furthermore 512KB of L2 cache is standard issue, as well as a quad-pumped 533MHz (4x133Mhz) with a maximum bandwidth of 4.2GB/s.

System properties show two CPU's with HT enabled

Along with the recent new stepping , a 533 MHz FSB (front side bus) was introduced a few months ago. This will become more regular with the newer Pentium CPU's. The recent announcements have led to a variety of CPU's with both the 'old' quad pumped (4x 100MHz) 400MHz and the new (4x133) 533 MHz FSB (yes, 532 to be precise):

Bare in mind that some mainboards do not support a 533 MHz FSB yet, if applicable to you, you'd need an upgrade of a new mainboard also.

The new 3.06 GHz processor runs at a slightly higher core voltage then it's predecessor namely 1.550V vs. 1.525V. This was necessary to justify the higher clock speed and thus stability. Not too worry though, the CPU remains level at an all-time very cool temperature. We stressed the CPU constantly and it never even topped 50 degrees C, in idle you can expect about 35 degrees C. The voltage increase by definition does not mean you need a newer mainboard, a BIOS upgrade would suffice. Funnily enough it now uses quite a lot of power, in fact enough to light a very bright bulb at 81.8 Watts when it peaks.