Currently, the .NET Compact Framework for Xbox 360 adds just one additional method, to the System.Threading.Thread class.

The SetProcessorAffinity method sets the processor or hardware thread on which a software thread will execute (the thread's processor affinity). The Xbox 360 has six hardware threads (two on each of three cores); four of these can be used by applications. SetProcessorAffinity has the following signature:

publivoid SetProcessorAffinity (
         paramint[] cpus
)