Which ISOs to use for Xeon Dual-Core CPUs

Hello,

I have a new server that I am going to load Red Hat linux on. It has
2-Xeon 2.8 Dual-Core processors with SAS drives in RAD 5 + hot spare.
To take advantage of the 4-bit emulation, which ISOs do I use from Red
Hat?

Red Hat Enterprise Linux ES 4 Update 4 (AMD64/Intel EM64T)
OR
Red Hat Enterprise Linux ES 4 Update 4 (x86)
OR
Red Hat Enterprise Linux ES (v. 4 for 64-bit Intel Itanium)

Since I am not using Itanium, fairl certain I can cross that off the
list. And since this isn't a plane 32-bit set of processors, I am
failry sure I just use Red Hat Enterprise Linux ES 4 Update 4
(AMD64/Intel EM64T) correct?


Does this give me the ELSmp choice in grub as well?

Travis