What are the speeds for Intel Pentium 4?

Answer 1

There are several different speeds depending on the 'type' and 'model' of P4. A comparison chart is available here: http://indigo.intel.com/compare_cpu/default.aspx?familyID=1
This is where you can compare all p4 and core 2 duo versions. If you are looking to buy a new pc look for the new "Core 2 Duo". Much, much faster with lower power consumption.