I'd now renewed thermal paste on north bridge (backside temperature), but does'nt have any effect. Temperature always reaches 55°C and above, so that blower starts to be very noisy.
And again: It does'nt show that behaviour under OSX.

Apple Diagnostic says everything OK!
Could this be also influenced by firmware-version?

Edit: tested it again under MAC OSX: Temp never reaches more then 45°C (even looking YT (TenFourFox). Blower is always more or less ideling and never blowing like under MOS!

[ Editiert durch Amigaharry2 07.10.2021 - 13:03 ]