K. I'll contact Apple re:new fan, see what they say..

Liked the pics, but wish there were a pic of the cooling system adjacent to the donk, like showing where it is located just to get an idea of the scale of things, also wondered how much extra weight it adds to the machine ?

Check out an article and some pictures of a revised liquid cooling system at http://www.xlr8yourmac.com/.

That's because the liquid cooling is in the DUAL proc machines.

I still have my doubts on Apple's ability to mass produce a liquid cooled computer. But I guess time will tell if they got it right. Since I'm risk averse,I would rather go down a notch on the computer performance but with a proven air cooling system.

Apple has been mass producing a liquid cooled computer since last year.

And IBM has been liquid cooling the S/390 for years, no?

It is, indeed, very similar to a car cooling system, except that it has a much smaller radiator, fewer, smaller gauge hoses and pipes, the coolant (probably) doesn't get as hot, the pump moves far less fluid over far shorter distances, and it doesn't have to roll down a less than smooth surface at 80+ mph, sustaining impacts from rocks, bugs, and god knows what else. And yet, I wonder how many cars suffer coolant system failures within the first 3 years. A pretty small percentage, I'd wager. Sure, it is absolutely possible for the liquid cooling to fail on the G5, but it is almost certainly not likely to happen within the time where the computer is useful. If you are unlucky enough to be one of the folks under the tail of the bell curve, you could get screwed, but the odds of it being you are pretty small. You are probably much more likely to suffer any number of more mundane failures which contribute far more to the cost of applecare than potential cooling failures. If you are worried about cooling failures, you should be far more worried about hard drive failures, power supply failures, motherboard shorts, power surges, etc. And if you are worried about those things, then you should already have paid for applecare. A failed cooling system is a non-issue, statistically, as far as I can tell from the evidence that is public so far and by looking at the example of automotive cooling systems.

--sam

Does anyone know what apple uses in this system? I really don't think it is a water/antifrezze mix. I would almost bet money they are using glycol.

I know, the problems come later... when time passes by. But anyway, I don't wish anything bad to liquid cooled Mac users.. I just think that old fashioned air cool system could be more reliable since it has less parts to be taken care of.. of course at the cost of performance.

regards

ps: I think I explained me wrong on the previous post

Right in this very thread, you'll find that I said it was water and propylene glycol.

Sorry, I posted very late last night and must have over looked it. Did anyone see the newer rev. of the water cooling setup here http://www.xlr8yourmac.com/ .