Frequency Plots
10% Fan Speed
There is a frequency spike at 50 Hz, but this is noise from the electricity network.
Peak spike: 100 Hz
25% Fan Speed
Peak spike: 160 Hz
50% Fan Speed
Peak spike: 800 Hz
75% Fan Speed
Peak spike: 800 Hz
100% Fan Speed
Peak spike: 800 Hz
Signal Recordings
I have recorded the signals shown above, but please keep in mind that I’ve enabled Automatic Gain Control (AGC) to do so to make it easier for you to reproduce them. The provided recordings are only offered for aural identification purposes.
10% Fan Speed
25% Fan Speed
50% Fan Speed
75% Fan Speed
100% Fan Speed
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even the LS variant spins nearly 2x too fast for most uses if you care about noise so existence of this variant is bizarre to say the least
and if you want performance at all costs T30 or some monster from Delta will be your friend
The T30 is a monster, for 30mm thickness.
it’s a weird one, extra thickness and top speed make it less fit for the consumer grade, but it isn’t going as far as industrial/server fans relying on the brute force and thickness alone as it uses better materials and tight tip clearance like Noctua does
probably makes most sense when you don’t want to build a rack but have a technical room to put the machine in and just run these at full speed to not worry about anything
at low speeds it’s fine for regular use if your PWM controller doesn’t make it stop despite using it in performance or advanced mode (hybrid stopping at 50% makes no sense imo as that 50% is still loud) but requires some extra space and you won’t be using that extra speed at all