Pic 6

Nice work!

I’m guilty of the lazy ol’ Noctua A4 / A6 / A8 and zip tie solution 😉

Just be mindful of the current draw and make sure the resistor you use can handle it. If not you can use multiples in parallel (which changes the resistance so use resistor formula if doing that).

Just for fun, I tested the next best Arctic Freezer Pro here.
That thing draws 0.08 Ampere.

By the sacred laws of Georg Simon, that would correspond with 150 Ohm, were it an ohmic load, which it is not.

But exact science apart, yes, a 150 Ohm resistor in line should cut that in half. Both of them then runinng a t whopping 0.48 Watts.
So, most resistors at hand should take that without complaint.

Funny that Noctua made a busines of that cheap makeshift solution. Applied that to several fans in the 90 yet it felt like a cheat even then. Bit of shrink tubing usually made it look neat enough.