Just been reading the Computex 2004 coverage over at Anandtech and it looks like the passive fan-less designs are taking off in a big way. In particular the new thermaltake passive CPU cooler and the passive PSU look interesting. Heatpipes coming out of the back of your PSU and then a load of copper fins externally! I would like to see some reviews of this kit... HINT
http://www.anandtech.com/showdoc.html?i=2090&p=14
Those look pretty cool
Zalman have released a passive case - the cpu, gfx connect to the case via heatpipes and the psu is also fanless. The biggest downside is that its costs over £1000!
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Passive cooling is nice and quiet, but one thing concerns me.
All electronic devices product heat. Sure, the CPU, GPU, e.t.c. produce the most. However, if - all of a sudden - those device are passively cooled, and fans aren't needed any more, than what happens to the airflow over all the other devices? MOSFET's, network chips, sound chips could have less air flowing over them.
Now, it may be that good old convection currents do the job just fine, but motherboards have lots of hot spots these days, and with no "proper" airflow I'm not sure it's all that good for them...
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a single really slow spinning 120mm fan will sort that out kezwill be inaudible through a case
Quite, but how many people will neglect to do that?Originally Posted by Tom
a single really slow spinning 120mm fan will sort that out kez
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A lot of the other chipsets on the mobo/other devices will get hot, but the tempratures they will reach are nowhere near the max temp they will operate at.
We have custom electronics at work that can quite happily operate at a constant temp in excess of 60C, all the Electronics guys do is use alternative components that can manage those temps. Im sure the computing world will manage somehow.
Also: all amplifiers in hifi setups have MOSFET's in, and almost all of them have no active cooling...
I know MOSFET's can handle the heat. The voltage reg circuit I built gets pretty hot, but it can handle it. But, what about the components around them? Remember when we had loads of capacitors blowing up?
I'm just thinking aloud really... but it's certainly something that needs thinking about.
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The thermaltake passive CPU cooler requires air flow from a case fan and hence projects far enough out to be in a position close to a 120mm exhaust fan so perhaps not suitable for every case but is looking good for my antec sonata. Reminds me of the zalman flower but sits in the existing airflow without the extra fan.
Now if that passive PSU is 400-450w I would certainly consider using something like that.
Last edited by ed^chigliak; 27-06-2004 at 10:12 PM.
Me - I dont have any case fans and very low air flow on my CPU, have had for almost 1yr now with only very minor changes (HDD basically) and not had a problem.
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what i dont understand is with heat pipes you can very easyly transfer heat, so why isnt the H/sink outside the case, or atleased right at the edge like the shuttle h/pipe units???
- surely thats gota be 100x better
- i'd make my own but i cant find any where selling heatpipes!!
daniel
Because all cases are different and this would involve you cutting the case which some people dont want to do. Thus limiting the potential market for them.what i dont understand is with heat pipes you can very easyly transfer heat, so why isnt the H/sink outside the case, or atleased right at the edge like the shuttle h/pipe units???
- surely thats gota be 100x better
- i'd make my own but i cant find any where selling heatpipes!!
daniel
whats the typical temps from one of these?
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