Non-x86 server: mainframes, minicomputers and UNIX servers, they use RISC (reduced instruction set) or EPIC (Parallel Instruction Code) processor, UNIX and other proprietary operating systems servers, RISC processor IBM's POWER and PowerPC processors, cooperative research and development of the SUN and Fujitsu SPARC processor, EPIC processor is Intel developed Itanium processor. This server is expensive, closed system, but good stability, performance, mainly used in the core system in the financial, telecommunications and other large enterprises.

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