After upgrading my late 2015 i5 6500 /R9 M380 /32 GB /250GB blade only to an i7 6700k cpu and added a 4Tb Sata SSD the fan jumps to 2000-2400 rpm under any mild graphics demand (nearly all screen savers).
I did replace the thermal paste except on the video ram where I used owl tree thermal pads because the paste left a gap.
I know heat is an issue with iMacs but I also have a late 14 i5 3.5ghz/ R9 m290x/ 32GB and a 2019 i5 3 ghz/Radeon Pro 570x/ 128GB that make no fan noise when running the identical screen savers.
I was planning on upgrading the cpu in the other two but concerned it may cause the same problem.
Thank you for your help!
After upgrading my late 2015 i5 6500 /R9 M380 /32 GB /250GB blade only to an i7 6700k cpu and added a 4Tb Sata SSD the fan jumps to 2000-2400 rpm under any mild graphics demand (nearly all screen savers).
I did replace the thermal paste except on the video ram where I used owl tree thermal pads because the paste left a gap.
I know heat is an issue with iMacs but I also have a late 14 i5 3.5ghz/ R9 m290x/ 32GB and a 2019 i5 3 ghz/Radeon Pro 570x/ 128GB that make no fan noise when running the identical screen savers.
I was planning on upgrading the cpu in the other two but concerned it may cause the same problem.
Thank you for your help!