My roughly two year old "Wraith Spire" cooler fan would no longer spin at anything exceeding 820 rpm, which meant I was seeing "ramp all the way to 100 deg F" on full-core 100% stress tests. Even in outdated game engines like the one used by "Pro Evo 2019", the CPU would get all the way up to 74 deg F.

I installed one of these a couple of days ago, and now I'm idling in the 30s, with 100% 12-thread stress testing topping off at 67 deg F, even after running for over ten minutes straight! In "Pro Evo" I'm sitting in the 50s. Talk about an improvement!