hello i can help a bit i have a gigabyte z270 x gaming k5 with a 7700k @ 5.2 ghz ht off , 3000 mhz rgb ram xmp on .
i was having issue with blue screens once and while ect over clocking with adaptive voltege in the - sign to -.050 wich is adaptive voltege wich is harder to get stable on high over clocks cause when in idol if u have your c3 c6 power states on idol will drop your cpu to 1.6 ghz or 800mhz and drops the voltege way low to , thing is some times when u open a app or somthing when from being idol at low volts low mhz it cant some times adjust voletge fast enough ( some times ) i had the same prob when over clocked past 5 ghz .
fix is you might not like it but trying shutting off the adaptive voltage and type in a specific volts like 1.41 and turn on load line calibration on high so when on 100% load your not dropping down to say 1.38 and getting a bsod the kick off is your sending that voltage to the cpu 24/7 and u can still have windows turn down your cpu to 1.6ghz in idol it just wont turn down your voltage thats hwat im doing 5.2 ghz hyper threading off , 1.41 vcore load line cali to high xmp on it still down clocks on idol just volts dont ( not a big deal )
other option is what i saw with adaptive voltege is the lower the load line setting is the higher idol volts is and load volts drops way down higher llc lower idol volts and way higher volts on full load and adaptive voltage totaly changes the idol and full load llc voltege compared to typing in a specific setting .
rule of thumb is before even thinking about adaptive voltage ( power saving ) is run fixed voltage first find the maximum multiplayer you can go safely with watching your temps with core temp hw mon ect.
for all we know 4.8 your cpu could want 1.46 vcore before its stable ( just example )
start out small like 4.4 ghz fixed @ 1.28 ( example i dont know the 4000 series to well ) run and bench find your stable volts run prime 95 or what ever u got to test find out ok im stable for x amount of time .
move on a little higher to 4.6 run @ 1.3 vcore if instant bsod try 1.31 vcore repeat with tiny increments until its stable watching temps what i do is i get core temp for windows and set the over heat protection on to 8 degrees c lower the nthe tj max of 90c so if your out and about runing a stress test core temp can shut off your pc if your temp goes to the setting you type in ( for secruity if u dont want to sit there all day )
my old 2700k needed 1.48 vcore for 4.9 ghz wich got very hot with out high end water it was a crap chip for oc . and 4.8ghz with ht on 1.48 vcore was the max max .
