Ah ok, I was asking, cause I remember some people reporting possible bearing noise problems for Corsair ML 120/ML 140 back in the day, but there were also conflicting reports and experiences, that some weird noise happens at 1200+RPM instead, etc, (which would mean it wasn't bearing noise, but resonance or running with too low voltage, or something similar).I haven't personally tried the Corsair fans.
The noise on the T30s is very minor...only audible over the basic air flow of the fan below 1500rpm and only with the fan held to my ear. I only mentioned it in comparison to the A12x25 because the latter are the only fans I have with less bearing noise.
They both use Sunon Vapo/Vapo2 maglev bearing, so that's why I asked, to get an idea if Sunon maglev (within the whole Phanteks package) is superior or inferior to Noctua SSO2, and Be Quiet! 6-pole motor for SW3, at the low speeds when the air woosh sound doesn't obstruct it. And Phanteks MP series and Blacknoise NB eLoop and Enermax who use magnetic-stabilized FDB-like bearings (Noctua SSO2 is one as well). And the one old Zalman, and the new Asus fan. And the upcoming EKWB next-gen Vardar fan.
Though any 3-pin (non-PWM) versions with variable RPM are inferior, as maglev needs a specific high voltage range for highest longevity and lowest noise.
Ah, you held it to your ear, not at the usual angle, distance in the PC xD, nvm thenThe noise on the T30s is very minor...only audible over the basic air flow of the fan below 1500rpm and only with the fan held to my ear.