On Wed, Jul 31, 2013 at 7:35 PM, Oleg Goldshmidt <[email protected]> wrote:
> > Hi, > > Is there a way to determine the nominal PSU power without taking the > computer apart (actually, preferably without powering it down)? Is there > any vendor information that Linux could in principle read? It's a > vanilla home desktop, not a brand name server. > > I know of dmidecode and lshw, but neither returned anything for > PSU. There is nothing on the outside of the PSU that I can find (well, > it does say "220Vac"). > > Can acpid help? Am I out of luck? > > > Assuming you can indeed measure the consumption of ALL the components on your computer (which I believe you cannot) - you still need to account for energy being converted to plain heat inside the PSU itself. This can easily get to 20% or even more on lousy PSUs. Products such as this: http://www.powersaver.co.il/pl_product~EM-IL-01~3~0.htm will tell you how much the device really takes from your wall socket (not including heat wasted on wires resistance from IEC's meter to your socket ;))... HTH, -- Shimi
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