I have a h115i platinum push/pull config and it cool my 9900ks really good. 5.1ghz 1.325v hit 75C in realbench. I just built a custom loop front 280 top 360 rear 140 and the temp is just about the same as h115i. Just my gpu from 74C now never excess 55C. Did I install my cpu block wrong or what? I have a ek velocity cpu block. Just ordered a corsair one to try it out.