Xeon : Computer Hardware Buyers’ Glossary
A line of Intel CPUs (Central Processing Units)
that spans quite a range of performance. The basic ones are a Pentium plus a
SIMD (Single Instruction Multiple Data) unit for parallel processing.
Unfortunately the Sun Java processors don’t exploit this ability. You would
have to write your own code in C and hook it into
Java with JNI (Java Native Interface) to make use of it. Some Xeons are 32-bit only and some also emulate the 64-bit
AMD (Advanced Micro Devices) Opteron (or as Intel too embarrassed to admit it now
produces clones, calls the EMT64T instruction set). The Opteron 64-bit set is quite different from Intel’s own Itanium
64-bit architecture. Some models support more one core (
CPU (Central Processing Unit) hardware set) and they often use hyperthreading to
simulate even more CPU cores than actually exist.