Hi guys,
Decided to go extreme, delidded my Pi4, apllied Liquid Metal to the bare die, copper shim above and Ice Tower cooling solution with Noctua 40x20 12V UV at 5V fan, Phobya Nanogreese Extreme TIM between copper shim and the cooler.
Results :
Rock-stable Pi4 with over_voltage=10 (1.1V) at 2366Mhz for the CPU and 915Mhz for the GPU.
Max temp under 4xstress_ng+120GB bluray rip playing at the same time - 45C.
Only watching 120+ bluray rips - 31C
Idle - 27C with force_turbo=1 all the time.