Lowering Fan Input Currents

[SirAhmix]

I recently ordered the Raspberry Pi 3 which recent reviews of it show it hitting 80°C and even upwards of 100°C when under max load. Now, to be clear,  those measurements were taken while the Pi was under a synthetic load (sysbench) with no cooling on it whatsoever. I will probably never even come close to those temps but I still want to air cool it if for no other reason than for the sake of tinkering. So anyway, I planned on air cooling it with a small laptop fan I had lying around. When plugging it into the 5V GPIO pin on my RPi 2, it works flawlessly however it is very loud, high pitched, and VERY annoying to listen to. Changing it to the 3.3V pin fixes this issue slightly but it's not quite what I'd like it to be. I originally hoped to limit the current coming from the pin via a Python script but looking into the GPIO specification of the Pi's, it looks as if there is no actual way to limit the voltage coming from the 5V and 3.3V pins from the Pi itself. Reason being, they're essentially connected directly to the micro USB power supply. My next guess is that I'd have to stick a resistor in between the fan's power wire and the 5V/3.3V pin. In theory, I feel like this would work but idk for sure cause I'm not very knowledgeable in circuitry at all.

 

Another few questions I have are:

1. Is there anything I can do to the fan itself to lower the current it accepts into it?
2. Does anyone know of a way to lower the current coming from the 5V/3.3V power pins on a Raspberry Pi?
3. If going the resistor route, is there anything special I need to look at or are they all the same?

Please keep in mind that I'm not looking for "The RPi doesn't need a fan!!!11!!!!!one!!!11!!!!"-based answers. I know it doesn't need a fan and that a small heatsink will do the trick. The whole point of this is for me to learn something about circuitry. 

[mikat]

a simple heatsink should do the trick:

http://thepihut.com/products/raspberry-pi-heatsink

or this:

http://www.ebay.com/bhp/raspberry-pi-heatsink

[SirAhmix]

Just now, mikat said:

a simple heatsink should do the trick:

http://thepihut.com/products/raspberry-pi-heatsink

Can't tell if you just plain didn't read the post or are just trolling...

4 minutes ago, SirAhmix said:

Please keep in mind that I'm not looking for "The RPi doesn't need a fan!!!11!!!!!one!!!11!!!!"-based answers. I know it doesn't need a fan and that a small heatsink will do the trick. The whole point of this is for me to learn something about circuitry. 

 

[mikat]

Just now, SirAhmix said:

Can't tell if you just plain didn't read the post or are just trolling...

 

sorry, only read the first 3 lines

thought i had a solution to your problem.

[SirAhmix]

1 minute ago, mikat said:

sorry, only read the first 3 lines

thought i had a solution to your problem.

Nah, it's all good. But yeah, I just really want to air cool it just for fun and for a small learning experience. It's basically the same thing as when people do like sub zero phase change cooling. A total waste of time and money, and completely pointless in every way shape and form.