Question The CPU hit 75/80 degrees but the coolant temperature remains less than 35 degrees (room temperature 26 degrees)

Aug 10, 2024
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The cpu is an intel i5 13600KF and the aio is a corsair h100i elite capellix.
I use this pc to make renders il blender 3d, it means that my pc stay at full load for many hours. I have already changed the stock thermal paste with the thermalright TF9. But nothing is changed. i have tested the cpu with cinebench 2024 and the temperature oscillate between 74 and 77 degrees with random peaks of 78 or 79 degress. the situatio was the same or little better before changing thermal paste.
when I disassembled the waterblock I think I hit it against some part of the case because when I reassembled it I noticed some scratches that seemed to have the shape of the processor but they weren't there before. Could I have tightened the waterblock screws too much?
Please help me.