Hi All. As title basically says, I currently own a Noctua U12P-SE2 (https://noctua.at/en/nh-u12p-se2) which I have been using on my i7 for a while, but now I am building a new PC with an i9 and would like to know simply if I should transfer my U12P or whether it would be better to buy a new NH-D15 (https://noctua.at/en/catalog/product/view/id/76/s/nh-d15/category/16/) instead. I can't find anything which directly compares the two. I know the i9 runs hot, and if the D15 offers significantly better cooling I will get it, but if I am only going to get like 5% more is it really worth it? Thanks!