Well, at least there is a review out there. They just reviewed the 'ultra low noise' model, but I can't find any specs on the fan. Not even from the asetek website!
From the specs they gave, I calculated a c/w of .29 with the fan set to 12v. If the specs are accurate, it's not very impressive IMHO. A 7000 zalman would probably be equal or probably better. Although we'll have to see a couple of other review to see how to fairs in other systems.