This question is here after I ask this one: http://hardwarerecs.stackexchange.com/questions/4275/uhd-compatible-graphic-card

The thing is that I have a HTPC and would like to be able to read UHD movies (since the i3's IGP cannot). As you can see in the previous question, finding a passive GPU with UHD display is impossible for now.

However, during my researches, I found a motherboard that embed a CPU (Pentium J3710) http://www.asrock.com/mb/Intel/J3710-ITX/index.us.asp. Following the description, it should be able to do UHD.

This motherboard is a good start but appart from the Asrock's description, if I go onto the Intel website, I cannot find any information about this CPU and its IGP (espectially the maximum resolution) and I didn't find anything else like this. Maybe you could ?

Here are my requirements for a motherboard that embed a CPU:

 - Preferably passive and low counsumption
 - UHD resolution output with hardware h265 decoding
 - At least 3 SATA connectors (2 for RAID, one for BlueRay). 3 or 6GB/s, I don't mind
 - My current chassis is Micro-ATX so no ATX, but Micro-ATX or Mini-ITX are ok