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x86-64 is a 64-bit superset of the x86 instruction set architecture. The x86-64 instruction set natively supports Intel's x86 and was designed by Advanced Micro Devices (AMD), who have since renamed it AMD64. This architecture has been cloned by Intel under the name Intel 64 (formerly known as Yamhill, Clackamas Technology, CT, IA-32e, and EM64T).[1] This leads to the common use of the names x86-64 or x64 as more vendor-neutral terms to collectively refer to the two nearly identical implementations.
x86-64 should not be confused with IA-64, the architecture of Intel's Itanium series of processors. The latter is not compatible on the native instruction set level with older 32-bit x86 processors.
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Historically, AMD has developed and produced processors patterned after Intel's original designs, but with x86-64, roles were reversed: Intel found itself in the position of adopting the architecture which AMD had created as an extension to Intel's own x86 processor line.
Oryginalny Athlon z 1999r r***243;***380;ni si***281; od Bartona niewiele. Dodano SSE (w Thunderbirdzie), zwi***281;kszono cache (w Bartonie) i podniesiono szyn***281; z 200 na 266,333 i 400 Mhz. Poza tym wielkich r***243;***380;nic nie ma.
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