<span class="content">The new ZEROtherm Nirvana does not look like a butterfly, but the influence of the original butterfly-shaped BTF90 is clearly there in the cooling fin design. That is certainly a good thing if Nirvana works as well at the top of the cooling heap as BTF90 did for the less expensive 90mm mid-range coolers.<br /> <br /> <a href="http://www.anandtech.com/casecoolingpsus/showdoc.aspx?i=3202">Read more...</a></span>