Intel Xeon is a high-performance version of Intel desktop processors
intended for use in servers and high-end workstations. Xeon family
spans multiple generations of microprocessor cores and two
micro-architecture generations - NetBurst (Pentium 4) and Core. Xeon
CPUs have the same features as Pentium 4/D, Core 2 Duo/Quad desktop
microprocessors. Additionally, Xeon CPUs can work in dual processor
systems. Special version of Xeon CPUs, Xeon MP, can be used in 4-way
systems. Also, Xeon CPUs often have larger size of level 2 cache
and/or include large level 3 cache.
Intel Xeon CPUs are almost always packaged differently from Pentium
4, Pentium D and Core 2 microprocessors, and, with a few exceptions,
can work only in server-class motherboards. First Xeon CPUs were
produced in 603-pin package. This package was quickly replaced by
604-pin package that fits socket 604 motherboards. Many modern Xeon
processors are also manufactured in 771-land FC-LGA package - these
processors require socket 771 motherboards.
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