Currently my 2666MHz RAM works at 1866MHz probably cuz of CPU limitation ,Xeon E5-2640 V3.
I set target DRAM frequency to 2666MHz which is default by memory modules of Corsair but then MB didn't want to post.
So I had to remove CMOS battery as adviced to reset the BIOS.
So I'm curious to know should I enable XMP (RAM supports it),would the board POST and what benefit if any would I get with it?