I have my i7-7700k overclocked to 4.8GHz, so I was expecting a bit more heat from the CPU, but I'm averaging 40 degrees whilst only iCue is open, nothing else. Also there is a loud rattling noise which is constantly present, less noticeable on Quiet, but on Balanced and Performance, you can hear it very distinctly, even above my fans at 100% speed. I've tried shaking the radiator in case of air bubbles, re-applying the thermal paste (Arctic MX-4 2019 Edition), remounting the block onto the CPU, and even making sure that the bracket was firmly tight against my motherboard on both sides at the end of installation. Any suggestions? Or should I get a new one?
Here is a video showcasing the issue:
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