Orchid XP v7 nous apporta ses lumieres en ce 2007/11/10 04:19:
> Nicolas Alvarez wrote:
> 
>> I read on a website about an interesting CPU watercooling technique: 
>> submerging the motherboard. They still had trouble because of ions on 
>> the water. It's hard to get *totally* pure water...
> 
> We have a machine at work that produces "20 mega-Ohm water".
> 
> Of course, water reacts with *air* to absorb various ions. (For example, 
> CO2 disolves in water to yield carbonic acid.)
> 
> But seriously - computers work at 12V. The water's resistance would have 
> to plummet to yield any meaningful current.
> 
> I would imagine a far bigger problem is water's viscosity; I'd think 
> fans wouldn't like that...
Main power is 5V for all the electronics. The 12V is for the fans and drives motors.

A good deal of the currents are counted in miliamps or less. In particular, the 
data transmition use very low curents at 5V. A leak of less than a 1 miliamp can 
easily cause malfunctions. And then, those 12V going to various motors can push 
or pull some curents into the data and address paths...

You don't need fans on a submerged system, if you keep them, it's only for the 
show with a clear case. Convection does all of the work.

-- 
Alain
-------------------------------------------------
Keep your eyes wide open before marriage, half shut afterwards.
Benjamin Franklin

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