
The Neowin Forums has a fascinating interview with some PS3 software developers. One of the most interesting things was the following exchange:
Q. PS3 is a very powerful hardware, but as more processing power is used, electricity consumption and fan noise increases. For AV equipment, noise is a big factor.
K2 So far, we are not worried too much since we have plenty of processing power left even at peak usage. On the other hand, from a software programming point of view, we have arrived to a stage where things work as they should. But there are plenty of optimization left to do. We have to balance function with load and noise.
K1 Nothing yet comes close to the load that Folding@Home applies. And I can see the possiblity of a fanless PS3 in the future, just like there was for the PS2.

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then we will start seeing Blue lights of death
My PS3 has been on non-stop for at least a week, most of which just folding away.
I've gotta say how impressed I am so far with the build-quality of the unit. I've heard before how processor-intensive Folding@Home is...I can't help but do the occasional spot-check to see how much heat is being expelled from the side grill, and surprisingly, it's not very much at all. The unit itself stays amazingly cool.
What DOES worry me (a LITTLE less after reading this article), is the unit's fan life. I've seen the havoc those innocent little dust bunnies have caused to my various PC component fans over the years...it would be a little less convenient to replace the PS3's fan...which I'm sure will go sooner rather than later if I continue to keep the unit on 24/7. As efficient as the PS3 is, I just don't think a fanless PS3 is going to cut it.
specifically because of this, I picked up a fine air gun attachment nozzle for my air compressor, which I hope, by injecting some compressed air through the ports, will help expel some of those damaging dust demons from my shiny black box.
i could swear a ps3 dosent even make a sound,whats that guy talking about his ps3 making noises when its a loud as an ant.
yup, it is possible, You will probably increase the weight and size of PS3 in two fold. Make the chasis as a gigantic heatsink just like Zalman fanless PC did. Of course, it will super heavy. In the end, it wouldn't be just home entertaining system, it will be a home gym equipment as well. Be sure to checkout Chuck Norris demonstration of 30 min 100% Copper PS3 Home exercise.
Its red blinking light of death i'v seen it.