the Phantek T30 does very well again in this test, I'd love to see more thick fans at 120mm and 140mm as for 6 of the 8 fans I have in my PC, it wouldn't matter much how thick they are as long as they perform. I have a bunch of NF-A12x25's that I'm very happy with, but I could replace every single one of them with a T30 and it'd likely have a good impact on temps at the same perceived noise level
Kind of a odd chart, dba x cpu temp. I know the guy probably doesn't have a ton of testing equipment but I feel like dba x fan speed percentage or dba x cfm. Or if you wanted to test heatsink performance just max stress test temperature.
noise vs speed is not very useful, and CFM is notoriously hard to test. For a simple test, noise vs temperature is exactly what I'm interested in, and I do appreciate that he included his subjective assessment of the noise as well