64-bit Computing with Intel EM64T and AMD AMD64
http://www.redbooks.ibm.com/abstracts/tips0475.html
Note that while IA64, EM64T, and AMD64 are all 64-bit, they are not compatible:
- EM64T and AMD64 are, with the exception of a few instructions such as 3DNOW, binary compatible with each other. Applications written and compiled for one will usually run at full speed on the other.
- IA64 uses a completely different instruction set to the other two. 64-bit applications written for the Itanium 2 will not run on the EM64T or AMD64 processors, and vice versa.
64-bit Computing with Intel EM64T and AMD AMD64
| Abstract |

