CPU temp is 38c at idle. It used to be 43c. The only thing that I don't like about this unit is that you have to remember to turn it on before you start the computer. I'm going to try to find something on the net to remedy that situation. The fans in the Antec case don't make any real noise. The noise is being generated by the two WD hard drives that I have. I ordered an enclosure for them that is suppossed to virtually eliminate that problem.