Nvidia's Fermi core runs hot, and stock coolers
are fine if you can get used to their loud and whiny operation. But if you
really want performance and silence, you need to upgrade to an aftermarket
cooler. The Zalman VF3000F (GTX470/465) VGA cooler is an excellent choice. Our
testing showed that you can have both performance and nearly silent operation
in the same package. @ Bigbruin