Translations:AMD64/FAQ/6/en

Both refer to 64-bit processors, one from AMD (AMD64) and the other from Intel (EM64T). AMD's 64-bit processors include the Athlon 64, Opteron, Turion, Neo, Phenom, FX, AX/EX/CX, Ryzen and EPYC families. Intel's 64-bit processors include the Core 2, Core iX, Celeron, Xeon, and Pentium (all based on the Core 2 architecture and later). The last few versions of the old Pentium 4 and Xeon chips also support EM64T.