Corsair ML120 RGB ELITE vs Noctua NF-A12x15 PWM

All 3 that I bought have that annoying whistling sound in the 20-50% range. Not sure if it's a bad batch, because I bought a separate 3-pack of ML120 and they are all perfect. Wouldn't recommend if you plan on any kind of silent rig.

Haven't tested the radiator fan-temp, but on full speed, it is a bit noisy than 1350rpm Arctic F12, which I give 5 stars without hesitation. The air flow is concentrated comparing with Arctic F12, which feels like a ring air flow. I did feel the air pressure is a tad stronger at full speed. To be honest, if Arctic makes 15mm fans, I will not buy this one, because Arctic fan gave me good experience, and also provides 6 years warranty

In this case, I'm gonna have six fans total, right? So when you're installing the fans, you wanna make sure they have the same amount output and the i...

I switched the fans to Noctua A12x15 and A12x25 because I value silence and performance. Kaze fans were rated at 800rpm max, and it's loud af at max rpm. Noctua fans at 900-950 rpm is very silent.