With the onset of the new "quiet" trend in cooling, people are just plain sick of dealing with a screaming heatink/fan combination to properly cool there processors. People would rather sacrifice some cooling today just to have a peaceful workstation. Due to this consumer trend, companies themselves are dropping the "strap a screaming delta onto a finned block of copper" mentality and are running to the designing boards again to try to find another method of effective cooling.

http://www.tweaknews.net/reviews/glovscoo/