Sounds like an interesting one, now that you have updated the bios and things have improved until you up the power limit, it could even be the mobo’s VRMs.
My first 9th gen mobo ran fine with the i3-9100 I used in it, upgraded to a 9600k and it used to BSOD when pushing the CPU to 100% for more than a few minutes, couldn’t even load all the way into windows when the 9900kf came along lol.
Turns out the board was advertised as compatible but reading around I found out the VRM phases were insufficient to supply stable power to the higher load CPUs.
Sounds like an interesting one, now that you have updated the bios and things have improved until you up the power limit, it could even be the mobo’s VRMs. My first 9th gen mobo ran fine with the i3-9100 I used in it, upgraded to a 9600k and it used to BSOD when pushing the CPU to 100% for more than a few minutes, couldn’t even load all the way into windows when the 9900kf came along lol. Turns out the board was advertised as compatible but reading around I found out the VRM phases were insufficient to supply stable power to the higher load CPUs.