I have a 10600k i5 with 125 TDP and I bought this cooler mainly for the LED lights. However, I wanted to overclock it a bit and had relatively good results up to 4.8 GHz with low temperatures in stress tests. But once I reached 4.8 GHz, it hit temperatures in the 90s. I thought it was the cooler's fault, so I bought a popular Arctic Freezer e sports duo. I was disappointed because it couldn't even handle 4.8 GHz and reached temperatures of 95+ in Cinebench. So, I decided to go back to the liquid cooler and was preparing for water cooling when something incredible happened. I installed the Arctic Freezer duo fans, the Arctic Bionix, since I had them in push-pull, and now it reaches a maximum of 92 degrees at 5.0 GHz with Cinebench R23 with AVX (for those who know, temperatures rise a lot with AVX). In games, the highest temperature I've seen is 45-55 degrees, and in the Intel XTU stress test, it reaches 76 degrees at 5.0 GHz. Even in the Intel Processor Diagnostic Tool stress test, it performs impressively at 5.0 GHz. I'm so impressed that I'm writing this review to clarify that the fan that comes with it is quiet and good, with LED lights, but the cooler shines with the Arctic fans. Also, the second time I used it, I applied Arctic's MX-4 thermal paste, not that the paste that comes with the cooler is bad. I'm so impressed that I'm now looking for better fans from Noctua and Corsair to see how far it can go. I have good airflow in my case and I have the Gigabyte Z490 Aorus motherboard. Also, when I overclocked, I didn't touch the voltage, I left everything on automatic and did it through Intel's XTU. I didn't even go into the BIOS. I mention this because if I had adjusted other settings, maybe I would have achieved better results. Also, I should note that I ran the tests immediately without allowing the thermal paste to fully settle, so maybe after a few hours, I'll get even better results.