Cooler Master Vortex TX
 

Having gotten used to heatpipes for air cooling, I had some concerns of
how the Vortex TX would compare against those coolers. Overall, the Vortex
TX had a strong showing and managed to more or less tie the Hyper 48 but
it couldn't hold a candle against the Hyper 6. Keep in mind that the Hyper
6 is quite a bit bigger, and uses two fans at high settings for maximum
performance.

http://www.viperlair.com/reviews/coo.../hsf/vortextx/