Something new and different is the credo PowerColor goes by these days. Radeon HD 3870 is a passively cooled card that takes up three slots if you use it as card no. 2 in your Crossfire setup, but it still has passive cooling with four heatpipes.
The cooler is made of aluminum, whereas the passive part of the cooler hugs the card from both sides. The card will be known as SCS3 and should be in retail soon.