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1 comment of this product found across Reddit:
crispy_chipsies /r/diyelectronics
2 points
1970-01-20 07:41:05.742 +0000 UTC

Correct; a simple DC motor behaves like a resistor, the more voltage it's given the more current it draws.

You can also reduce fan speed with a PWM dimmer, which provides more torque than reducing the voltage does.