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Are their any 64-bit exclusive Instruction Set Extensions for x86-x64 processers?

Question asked by wadmooddeer on Sep 24, 2019

Since x86-x64 has taken over the PC market share over 32-bit x86 processors as an OEM standard, It's unlikely what Instruction Set Extensions is exclusive to x86-x64, since nobody seems to know.

 

List of Instruction Set Extensions

 

MMX 1996 (both 32-bit and 64-bit)

 

3DNow! 1998 (once supported by AMD for both 32-bit and 64-bit but now deprecated)

 

SSE 1999 (both 32-bit and 64-bit)

 

SSE2 2001 (both 32-bit and 64-bit)

 

SSE3 2004 (both 32-bit and 64-bit)

 

SSSE3 2006 (both 32-bit and 64-bit)

 

SSE4 2006 (both 32-bit and 64-bit)

 

SSE5 2007 (development aborted 32-bit and 64-bit exclusivity unknown)

 

AVX 2008 (Exclusivity Unknown, Either 32-bit or 64-bit)

 

F16C 2009 (Exclusivity Unknown, Either 32-bit or 64-bit)

 

XOP 2009 (Exclusivity Unknown, Either 32-bit or 64-bit)

 

FMA/FMA4/FMA3 2011 & 2012 (Exclusivity Unknown, Either 32-bit or 64-bit)

 

AVX2 2013 (Exclusivity Unknown, Either 32-bit or 64-bit)

 

AVX-512 (Exclusivity Unknown, Either 32-bit or 64-bit)

 

If any moderator knows if any of these Instruction Set Extensions are exclusive to x86-x64 processors, let me know because 32-bit x86 processors are declining in market share as OEM standard.

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