If U are oc less then 4.6GHz do not use "manual voltage" (constant voltage) use offset mode. Do not turn off: C1E, SVM, Core C6 State HPC and APM... or your PC will freeze in idle state. If U oc more then 4.6GHz it`s hard to do this in offset mode.
Do not run Prime95, OCCT more then 1-2h, If...