Your processor is an Intel Celeron D Pentium-4 processor on a 478 pin arrangement with a front side bus speed of 533Mhz also known as a "Prescott" core.
Your processor does not support Hyper-Threading.
Your processor is of the second generation of Pentium-4 processors.
First generation P-4's are from 1.4Ghz to 2.6Ghz 400mhz fsb.
Second generation P-4's were 2.66Ghz to 3.06Ghz 533mhz fsb
Third generation P-4's were 2.8Ghz to 3.4Ghz 800mhz fsb
Fourth generation P-4's introduced Hyper-Threading, a process where the single processor acts as if it is actually two seperate processors running at the same time. This allowed users to do multiple tasks at the same time much faster than before. They were from 2.8Ghz to 3.6Ghz 800mhz fsb and were on a 775 pin die arrangement.
P-1's were from 75mhz to about 266mhz speeds
P-2's were from 333mhz to 600mhz and wwere available in either a Slot-1 or Socket 7 interface
P-3's were one of the most popular chipsets ever and were available in speeds ranging from 450mhz to 1.2Ghz with fsb ranging from only 100mhz, to 400mhz.
I still have two P-3 1.2Ghz processors in two older PC's that are running Win Xp Pro and are still in use today.
Today, you can get processors that have up to 4 cores called "Quad-Core", and running 1200mhz or faster fsb speeds.
And to the other posters, Pentium D has been around since at least 2002, which is when I purchased my Pentium D Celeron 2.66Ghz processor. Do not confuse it with the newer Pentium D processors that are still available today. They are completely different.