Also, the SLK-800's little brother, the SK-7, is worth a look. It costs about $10 less and cools almost as well. Like the SLK-800 and GC-68, it takes an 80mm fan, meaning lower RPMs for a given airflow. Unlike the GC-68, it also has a copper base, desirable for Thoroughbred-core AthlonXP's due to the small contact patch. Mine should be arriving tomorrow, yay

and I'll be trying my first YS Tech adjustable-speed 80mm fan with it, plus a couple others, to see what's what.