Noctua NF-A12x25 vs Gentle Typhoon 2150

Sound shootout between these two great fans.  The measured speed of each fan is as follows:

Noctua:  260rpm (min) to 2,070rpm (max)
Gentle Typhoon:  900rpm (min) to 2,250rpm (max)

The Gentle typhoon is considerably more powerful and was blowing things off my desk.  The Noctua is definitely quieter, however not as powerful.  I will be doing more thorough tests with these and other fans.

Video:  Canon 600D with Sigma 17-50mm EX
Audio:  Tascam DR-05X in mono mode
Software:  Premiere Pro CS6