The old fan i used for my modem cooler, and i used 5V usb adapter to power up it so it won't noisy...

I get another one 









Is it powerful you should know... Aluminium Mesh 
The power adapter i get from my old modem,\
now days all modem power adapter is 12v, hard to find 5v

Extremely silent, only can hear airflow sound

Benchmark :

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Added on May 14, 2011, 3:06 pm
the fan will goes slower if your fan is 12v

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Added on May 14, 2011, 3:06 pm
I dun like belkin products because they are expensive...

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Added on May 14, 2011, 3:46 pmI strongly recommend to clean your laptop's heat sink before you get a cooler... Also change its Thermal Paste to Arctic Silver 5 ,Tuniq TX4, Arctic MX-4 etc.
Works great for me, btw i don't need a laptop cooler anymore for now, thats a gift for my sister's birthday...