Scotty, I need more power! 
Thursday, February 18, 2010
2:31 PM
Scotty, I need more power!
There is also a direct relationship between load and power. 
On average, "computing" takes more power than remaining "idle". 
Thus the load on a server is (roughly) proportional to its power consumption over a baseline idle consumption:
 power consumption J ≈ Jbase + αW where
Jbase = idle power consumption in Joules.  
W is work related to load. 
α is some constant of proportionality. 