The Atom servers appear to be Avoton Atoms[1], probably a C2550 or similar. While they aren't as high end as a typical Xeon, they aren't as terrible as the older Atom cpu. See this chart:
https://www.servethehome.com/wp-content/uploads/2014/01/Inte...[1]https://ark.intel.com/products/codename/54859/Avoton
