something strange going on, it seems no matter what i do it will not go past 3.9Ghz. after setting 4Ghz in the BIOS it boots into Windows at 3.9Ghz, go back into the BIOS its set for 4Ghz but running at 3.9, i even tried by setting 1.27v, it still wouldn't do it.
So i went into the desktop Easy Tune, set it to 4Ghz and it worked, tress tested in Real Bench for 15m @ 1.22v, temps reached 49 to 52c.
I saved it and set to keep the overclock on reboot, once rebooted it had gone back to 3.9Ghz again, in Easy Tune core 1 had turned yellow like it does when you adjust the multi, it was set at 39x, strangely the other 3 had remained red and at 40x.
I don't know what is going on.
BIOS F7