Is your CPU delidded? Those noctua fans aren't particularly good at moving air through radiators, specifically high FPI ones like yours.
I've used those IPPC fans, they seem decent enough. I don't have much recent knowledge about how they compare, but I thought the jagged stator vanes at the back helped straighten and push air through? His temperatures is limited due to the single 240 rad, buts that probably still ok If workload is not too heavy.