Well, a few words about the h150i capelix. The water cooling is very good and unique in terms of beauty and impeccable quality. It comes with a Commander CORE RGB & PWM Fan Controller, which allows you to connect and control the fans and RGB individually from there.
As for the negatives, coming from the Corsair iCUE H150i RGB PRO XT, I would say that there is a significant difference in temperature performance. The price difference is an extra 50 euros to purchase the capelix compared to the Corsair iCUE H150i RGB PRO XT, and this is not logical since there are noticeable temperature differences in idle and load. The Corsair iCUE H150i RGB PRO XT works with the pump in balance mode, while the capelix works in silent mode with noticeable temperature differences.
For me personally, if you have the extra 50 euros, go ahead and get the capelix because it is much better in all aspects compared to the other 3 series coolers from Corsair!