GT 60 extra fan

So I wanted to mod another fan to the main in the notebook. It has the original 12V 0.5A fan on it and I wanted to get another 12V 0.1A fan on the same fan header to improve on the airflow to keep it a bit cooler. I know desktops can support up to 1A in total but I'm completely lost when it comes to notebooks, are those rated at the same?

I hope someone can help me here

 

where will you put the second fan ? where will it fit ?

 

Will get modded into the case to increase the airflow.

 

Isn't it easier just to get a laptop cooler? It's portable and USB-powered.

 

Standard maximum draw for fan connectors is 0.5A, but some 0.6A 5V fans also exist and such a small overdraw should be easily within margins. If you want to be absolutely certain or want to know whether up to 1A is actually possible then find and check the motherboard's schematics; trace down the components of the power circuit that leads up to the connector and check the specifications of each (google ' part nr. + pdf').

Note there's a difference between 3-pin and 4-pin fans:

• 3-pin main fan: These use varying voltage to control speed and in order to have it run in sync without interfering with the main fan you'd need a 3-pin type for the piggy-back fan and use only its voltage and ground wires, leaving its rpm wire unconnected.
• 4-pin main fan: This type supplies full voltage all the time, but uses an on/off signal to switch the fan really fast (pwm mode). With a 3-pin secondary fan that'd mean it run 100% permanently, so a 4-pin is needed to have it run according to demand; connect voltage+ground+pwm and leave the rpm floating, same as before.

 

That's the plan, it's a 2pin fan and I wanted to connect it to the ground and power of a 3pin fan, it should then pretty much be in sync with the 3pin fan in terms of usage.

 

USB 2.0 has 0.5A where as USB 3.0 has 1.5A minimum.