I believe this CPU heatsink was first seen with the enormous TJ12 Silverstone showed a long while ago, but this the first solid information I've been able to find. Cowcotland have photographed it and given a little info. If you'll excuse the google translated text:
Silverstone back in the radiator! We were waiting forward to it since the confidences of the brand at the CES , and we should not be disappointed. We start with the heavy, very heavy: SST-HE02 . Six heatpipes 6mm with an asymmetrical design, fanless design, and forget the competition. Finally, according to the brand, but we want to believe them, especially the white version of the radiator level impressed us finish with a very special treatment.
original article in French: http://www.cowcotland.com/news/31922/si ... -slim.html