On ark.intel.com I retrieved a list of compatible processors for this board.
Among them are the
These are listed with an exclamation mark statig 'Compatible, but requires additional information'
Interestingly enough, these are exactly the processors that are available at a reasonable price, so I'd like to know what 'additional information' is required.
I would be grateful if someone could point me to some docs specifying what to look out for.