Only the two Low power models were tested by Intel, but neither are available on retail market. As long as BIOS includes microcodes, I don't see anything issue
Has anyone tried with for example E3-1245?
The only processors that have been confirmed as compatible are the ones available on this list:
Processors that are not listed will unlikely work on the system, and might actually be damaged if installed, or cause damage to the socket.
Retrieving data ...