Well, it looks as if Thermaltake wants to get into your case as well as on top of your processor and graphics card. Head on over to Virtual Hideout and see what they found about the Thermaltake DC Fans. They do some testing on 60mm, 80mm and 92mm models, so let's see what they have in store for us. here's a snip:
"For me, I can put up with an adequate amount of noise, but not too much, especially if it is high-pitched in nature. There is only so much I can sacrifice for my system! So when I had the chance to test out these new ThermalTake case fans, I was quite happy. The specs seems to indicate that these fans push quite a bit of air, and at the same time, don't generate too much noise. But, as always, specs can be deceiving, especially those coming from ThermalTake, as I'm sure you all remember the "rated cfm" of the 60mm fan that came upon the TT Volcano II Heatsink."