So i'm back with new try outs, i tried 4.0mghz with 1.375 V it crashed in cinebech R15 , then i tried with 1.393V, and again crashed in cinebench but not at begging in the end, so i tried a 3rd time with 1.4V and memory up from 21.33 to 29.33, i run cinebench and it work i had a slight improvement as the last score i had with 20 points, so i runned again and it crashed, what to do more?