IA32E Intel IA32e = AMD64 Long Mode

  Mode Submode Default Sizes GPR
Width
OS Applications Recompiling
Address
Operand
Intel 64-Bit
Extension Technology
IA-32e64-bit64326464Yes
Compatibility32/1632/163264No
Legacy32/1632/163232/16No
AMD64Long64-bit64326464Yes
Compatibility32/1632/163264No
Legacy32/1632/163232/16No

IA32E Intel IA32e = AMD64 Long Mode

  Mode Submode Default Sizes GPR
Width
OS Applications Recompiling
Address
Operand
Intel 64-Bit
Extension Technology
IA-32e64-bit64326464Yes
Compatibility32/1632/163264No
Legacy32/1632/163232/16No
AMD64Long64-bit64326464Yes
Compatibility32/1632/163264No
Legacy32/1632/163232/16No