z390 i7 9700k overclock
im overclocking a 9700kf to 5ghz. im using a gigabyte z390 master latest bios.
my temps are good never over 90c useing prime 95. but core 4 fails with in 60 sec. the rest of the cores plow on for 30 min fine
i have all core sets to 5 ghz, i also noticed when running cine bench r 15 that core 4 was only useing 2 or 3 percent but all other cores were at 100 percent.
i think a bad cpu