In this case it's an internal unclassified error, which means it's not publicly documented (which is ironic given it's "unclassified"). However, yes, it's clear you're dealing with an internal CPU fault and not one that could be generated by bus issues or any other external factor other than heat and voltage. Though make dead sure motherboard software isn't interfering; sometimes mobo software will generate CPU faults of this sort because of bugs in their CPU drivers.
Other than that, no, there's really nothing else you can retrieve from this.
source: WHEA error for a MCA fault