Computer case and power supply has been changed. I end up installing overall 7 fans and they are non PWM fans - constant speed - 1800 RPM. From my Lian Li computer case, I can control their speed. Overall computer temperature has come down. CPU core temperature has come down by around 25 Degree celsius and there is no more constant loud fan sound. Overall happy with this change. Dell had soldered two antennas for the soldered wifi card. I need to work that out. My wifi speed without an antenna is just 10% of what I used to get it in the past.
I am reading this thread. which talks about "Dell XPS 8930 is noisy under load - How to improve Cooling - Top Fan and CPU Cooler" I am still having this issue but only in Windows not in my ubuntu 20.4 LTS. I have added at least 3 more drives: One PCI NVME(after removing that intel boost etc...) and two SSDs. Should I upgrade the power supply unit and replace the fans or what exactly I should do? Does changing the Computer case/with power supply will fix this issue? so there there is more room. Please help.
XPS 8930, is noisy under load, #2