Recommendation for Fedora server?

[Timothy Murphy]

ed at hp.uab.edu wrote:

>>> Also, match the power supply to the load. If you only need 50 watts,
>>> do not buy a 400 watt power supply. I think I have a 150 or 200 watt
>>> power supply in my VIA C3 computer, LPX form factor.
>>
>> While you don't need a huge supply, one bigger than your current needs
>> gives you more room to play with later on, if you have to add something,
>> or the power supply gets a bit sick.  The wattage is the capacity of
>> what it can deliver, not that it's always going to draw 400 Watts from
>> the mains and be a drain on your electricity bill.
>>
> 
> You are correct, that at 400 watt power supply does not always draw 400
> watts from the wall. But the efficiancy of the power supply is less when
> how running at full power. Take this article for example:
> 
> http://www.silentpcreview.com/article263-page4.html
> 
> The 300 watt power supply leaks 12 watts when the computer only needs 40
> watts.

Probably an ignorant question, 
but if one is talking about a mini-ITX system, 
will a cheap external AC power adaptor do the job,
like those incorporated into a power plug, eg
<http://www.mini-box.com/60w-12v-5A-AC-DC-Power-Adapter_2?sc=8&category=13>?