That X8DTH-6F is an E-ATX form factor, which should be relatively easier to fit into non-supermicro cases that support E-ATX "like" form factor. What i've learned is that E-ATX isn't standardized very well, so a few of the stand-off locations may or may not be different, depending on the brand of the case. That said, *most* of them will match up, and where you might be missing a standoff, you can either create a dummy standoff (cut off the threads to a stand off), or drill and tap a hole to add a standoff.
Not the same board, but just last year I built a X9DAi system into a NZXT Phantom 820 case. I did have to add a few stand offs; but I have the tools for that so it wasn't a big deal.
What is harder to install into non-Supermicro cases are the ones that are "EE-ATX", which are extra wide, usually to allow for more DIMM capacity or something like that. Anyway, they are much harder to find a non-Supermicro case that will fit because they often extend an inch to the left (from the backpanel view) of the rear i/O plate; in most standard cases, that location has a PSU installed.