ed@xxxxxxxxxx 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>?
