[mythtv-users] Any advice on cooling down my backend

[John Drescher]

On Fri, Sep 19, 2008 at 1:43 PM, Mike Perkins
<mikep at randomtraveller.org.uk> wrote:
> John Drescher wrote:
>>> A more efficient PSU will reduce the heat generation, at least a bit.
>>>
>> How about a lower wattage one so that powersupply operates in the most
>> efficient band under peak load.
>>
> Doesn't necessarily follow. I had PSU troubles till I realised that the
> motherboard in question needed more 3.3v than the PSU could supply. I now have a
> 550W PSU driving a m/b with a total drain of 55W, and cold, too. It could
> probably work with a smaller PSU, but the m/b is a replacement for one that
> melted down. More efficient -> more modern, from what I have seen lately.
>

The problem is most power supplies are efficient when they are loaded
> 80%. I am net even sure if 80+ power supplies are very efficient at
10% load. So if you can still have the rail requirement met by a lower
wattage power supply you probably are much better off than a higher
wattage one.

John