"On the test bench today is a new dual 120mm fan heatsink from Evercool called the Transformer 4 HPJ-12025. Its twin fans are arranged in a push-pull configuration and rotate at a leisurely 1000RPM. The Transformer 4 heatsink is intended to be a quiet under power, using two fans to quietly do the job of one. As you'll see shortly, the Transformer 4 succeeds in this regard with a real world noise footprint under 40 dBA."
FULL STORY @ FROSTYTECH (http://www.frostytech.com/articleview.cfm?articleID=2454)