Yeah, with my SETI example, I overclocked my computer mainly for the purpose of running the SETI client faster. I assume that an overclocked machine uses more

Yeah, with my SETI example, I overclocked my computer mainly for the purpose of running the SETI client faster. I assume that an overclocked machine uses more power, and that an overclocked machine at 100% CPU utilization uses significantly more. I'd be interested mainly in a ballpark/analogy figure. Are we talking "I forgot to turn off the night-light" or "Could power 5 homes for a year"?