Zaleman are the best all they do is invent cooling stuff. I cool my cpu and gpu with the Zaleman Reserator. I clocked my FX 51 to 2.3Ghz and the 6800 GT card to 425Mhz. I can only just hear the cooler if I wear the cooler on my head. My dual processor workstation has 2 Zaleman Aero Flower coolers for both processors their quiet and are huge.
I decided to go with the Zalman. I have on of theirs now and it rocks. This one is a lot better though so we shall see once I build my computer.