Wont get cold as such
Since it can't get colder than the ambient air temperature
But yes noise from the radiator will be the pump working since its built in /attached to radiator
Ah that makes sense thank you. I've just redone it now and so far so good, 38 degree's at idle it seems to be, going up and down a bit but nothing extreme. So I think it was just user error. The RGB doesn't seem to work though, so going to try it in a few different slots etc and see if I can figure out why. Last time they worked on the fans but not the cpu block. Thanks for all the advice!