92mm Fan Roundup
 

SilentPCReview tackles the 92mm sized fans to find the best noise/performance sample, their test methodology is in depth and gives you pretty good info on how each fan performs at different voltages:

"Our latest fan round-up covers seven 92mm models. Familiar names include Nexus, AcoustiFan, Coolink, and Noiseblocker, but there's some unfamiliar ones too: Pure Silence and Fander both submitted samples. It's noise quality that matters the most in our testing. Can any of the contenders knock the Nexus 92 out of the top spot?

http://www.silentpcreview.com/article720-page1.html