Depends on usage I guess, my CPU cost ($50) is ~4 months of the monthly electrical bill for the entire household. And I am doubtful the CPU even equals 5-10% of

Depends on usage I guess, my CPU cost ($50) is ~4 months of the monthly electrical bill for the entire household. And I am doubtful the CPU even equals 5-10% of the electricity usage. EDIT: back of the envelope calculation Let's say my CPU runs 12 hours a day and uses 20 watts on average. So, over a month, it is used for 375 hours at 20 watts = 7.5 kwH which roughly costs about 1$.