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   Date: Fri, 02 Feb 2007 15:50:49 -0500   
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   Subject: Re: An Ultimate Vista Problem   
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   Arrowcatcher wrote:   
   >    
   .... snip ...   
   >    
   > However, our "Kill-a-Watt" electricity monitors show that the   
   > upgraded machines now draw 40% more ultility power.  My P4 machine   
   > jumped from a nominal 105 watts to 145 with its new Invidia FX5500   
   > display adapter, which I didn't otherwise need to edit AVI and   
   > MPEG2 videos.   
      
   At least in the US and Canada you don't need any fancy metering   
   instrumentation.  Just turn off everything in the house, and check   
   that the outside wattmeter is quiescent (no wheel rotation).  Turn   
   on a calibrated (more or less) power drain, such as a 100 Watt   
   bulb, and time one rotation of the wheel.  Now you can turn on the   
   computer, turn off the bulb, repeat the measurement, and easily   
   calculate the drain of the computer.  With a few simple equations   
   you can handle any draw in the presence of any constant background   
   drain.   
      
   Rotation speed is proportional to power draw, and inversely   
   proportional to the time per rotation.  That's all you need.   
      
   --    
       
      
    "A man who is right every time is not likely to do very much."   
                              -- Francis Crick, co-discover of DNA   
    "There is nothing more amazing than stupidity in action."   
                                                -- Thomas Matthews   
      
   --- Platinum Xpress/Win/WINServer v3.0pr5   
    * Origin: Omicron Theta BBS (1:261/20)