maybe i got speed syndrome.
i love to watch Tokyo Drift everyday.
one day i must buy a computer faster than i already have.

thanx to all

buy a 400mm fan ;) slow and mutch flow...

Those laptop fans look fancy :)

give me the picture

Slightly smaller than 400mm.:^D

if temp inside my casing are hot i can used this fan for additional cooling.
:^D

Actually, there is a -5V and -12V rail on ATX, which you can combine with +12V to get 17 or 24V. I used to do this with some industrial Papst fan rated at 12~24V. The downside is that you can't use it too much, my 350W Enermax for example only outputs 1A on both -12V and -5V. So only do this at your own risk :)

What do you mean can't use it too much

can't hook up too much fans, if any.

Putting two batteries in series double the voltage; certainly. But, you don't do it with a fan rated at 12V and have it hooked up to 24V. Read the thread starter :)