Modern Intel CPUs start with the memory channel farthest away from the CPU, there are *some exceptions* but in general, it will hold true on consumer, commercial and enterprise grade hardware.
In this case, the memory channel to use first is actually clearly labeled as A2/B2.
These are all embedded offerings:
LGA1155:
http://ark.intel.com/compare/52270,52277
http://ark.intel.com/compare/65726,65733,78167,78168
LGA1356/2011:
http://ark.intel.com/compare/61426,61428,64594,64616,67024,67025,67026
LGA1150:
http://ark.intel.com/compare/75461,75464,75467...
Head over to the Distributed Computing subforum and find the link for IRC. A good portion of the group, including myself, hang out there. We should be able to answer questions for you.