Commercial Servers vs. Consumer Grade Hardware

[techlists at phpcoderusa.com]

Hi,

During a past thread someone talked about commercial servers being noisy 
and using a lot of electricity.  I assume the electricity usage would 
mean more heat as well.

Was this a home lab/office statement or was it a general overall 
statement?

This begs the question why not use consumer grade hardware in a data 
center instead of noisy and hot commercial equipment that also use more 
electricity?

Thanks!!
Keith