|"Over the course of a year (again, assuming 24/7 operation), that adds up to just over $5"|
But that isn't the only issue at play. At 14W, a Conroe processor is likely going to need active cooling at idle. A 65nm AMD processor won't. In addition, if it is assumed the processor has a low duty cycle when it is off idle, like in an office, the box can be made very compact and would be whisper quiet without using expensive technologies like notebook parts. So the cost to the OEM is lower. And a typical cube farm without hundreds of fans going all at the same time is a lot quieter.