I don't know that Xeon microprocessors will remain that special in an ever advancing technology world. They have been around for some years but they were never intended for the ordinary home user but for high-end workstations.
They have a clock speed of 1.2 which is nothing at today's rate.Xeon is a brand of x86 microprocessors and covers several generations XEON is meant for) embedded system markets.
The Intel Xeon processor is special because it is able to do so many things. It is actually designed for high end systems. Some of the reasons that Xeon processors are so special is that it is has a high core count, has a higher RAM processing speed and capability, and is able to produce such high speeds and computing power while at the same time drawing power that is the same as any other processor. Xeon processors are tailored made for servers. The bottom line is that the Xeon processor is made to be fast and efficient and has also been noted to be present in some of the world's fastest supercomputers. Overclocking is pretty much impossible with a Xeon processor present but the great thing is that one would certainly not have to worry about processing speed and effectiveness because the Intel Xeon processor meets and exceeds all of these desired qualities.