[mythtv-users] The elusive silent myth BE/FE box [in search of]
epinephrine_junky at beadon.ca
Sun Aug 21 00:01:03 UTC 2011
>>> (iii) Your pico-PSU may sound a good idea but remember you'll get
>> in the power brick as well, say 7 to 10W.
>> True but the beauty of that is that the heat is dumped outside the box
>> it doesn't contribute to (over)heating the CPU.
> Not exactly. Say you've got a system that tops out at 100W. That power
> supply is going to add another 15-20W into the mix. However that power
> supply is dumping straight out the back of the system, and drawing air
> from inside the system to do so. Not only is it not making the system
> hotter, it's actually helping to cool it.
I have experimented with the picoPSU and can confirm what you say above.
Even though the PicoPSU itself has better efficiency than my Antec
Earthwatts 80+ it lacks an outlet fan. I found that temps inside my case
went up 10-20C with the PicoPSU. This had the side effect of making the
CPU fan max out which was very noisy. So even though I had one fewer fan
the net effect was higher temps and louder box. I'm thinking I might
experiment with the PicoPSU again and this time install a 120mm fan in the
hole where the ATX supply lives currently. So I should get less heat put
into the box and quieter overall because my ATX PSU uses a moderately loud
I'm also mulling over a better than stock CPU cooler since my
finger-in-fan testing shows that the loudest fan in my box is currently my
CPU fan. I'm considering this guy to fit in my HTPC case.
Nexus LOW-7000 R2 120mm Endurance-Sleeve Bearing Universal Low Profile
I agree with your comments about the totally fanless system. I haven't
seriously considered them because I don't see any world in which I'm going
to spend $1500 on a case.
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