I'll point you to the thread below so we can keep this about your build.and what worries me the most is what Linus said at the end that this could spread to Pc Ram as well. Now imagine testing with the best chips and dazzle you with that performance and then go ahead and change the chip without telling anyone and sell you that.
https://www.overclockers.com/forums/showthread.php/799245-1Rx8-vs-1Rx16
Buildzoid answers this question around 16m in.