Under Windows, the Mendix Service Console is needed to run the Mendix application server. This application has only been tested on x86 and x86-64 systems.
We know that Mendix Service Console 1.7.0 for Mendix 2.5.* does not support Itanium (IA-64) processors.
However, Mendix Service Console 2.0 for Mendix 3.0 should run correctly on Itanium.
Mendix doesn't care on which processor you are running. Just follow the deployment documentation for windows.