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64-bit architecture

Architecture word sizes
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The 64-bit architecture is a microprocessor or computer architecture that has a datapath width or a highest operand width of 64 bits or 8 octets. These architectures typically have a matching register file with registers width of 64 bits.

64-bit microprocessors

Alpha

DEC


ARM

MediaTek

Phytium

MIPS

POWER

SPARC

Fujitsu

Oracle

Sun Microsystems

x86

IA-64

Other

NEC SX

Research/University

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64-bit microcontrollers

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