Jelsomyno,  The EC3539 isn't compatible with the R410 at all, regardless of the motherboard that is installed. The R410 is going to support the 5500 and 5600 versions of the Xeon processor. Unfortunately no, there isn't a way to make them compatible. Let me know if this helps to answer your question. 
will this motherboard: Dell N051F (Poweredge R410) work with this cpu: xeon EC3539 ?this cpu is not mentioned here:[URL] does it mean that there is no way to make them compatible?
mobo N051F + cpu EC3539