Mode Submode Default Sizes GPR
Width
OS Applications Recompiling
Address
Operand
Intel 64-Bit
Extension Technology
IA-32e 64-bit 64 32 64 64 Yes
Compatibility 32/16 32/16 32 64 No
Legacy 32/16 32/16 32 32/16 No
AMD64 Long 64-bit 64 32 64 64 Yes
Compatibility 32/16 32/16 32 64 No
Legacy 32/16 32/16 32 32/16 No

  Mode Submode Default Sizes GPR
Width
OS Applications Recompiling
Address
Operand
Intel 64-Bit
Extension Technology
IA-32e 64-bit 64 32 64 64 Yes
Compatibility 32/16 32/16 32 64 No
Legacy 32/16 32/16 32 32/16 No
AMD64 Long 64-bit 64 32 64 64 Yes
Compatibility 32/16 32/16 32 64 No
Legacy 32/16 32/16 32 32/16 No