Has anyone technical done a tear-down evaluation of the bonus Neppys? The quote above makes me worry about running it in my home...
The 2pin fans are indeed slower than the KnC branded fans, but probably close to the speed of the original BitFenix. The Noctuas are a decent substitute, but they are just too expensive for the marginal cooling difference that they made. I had a Delta 92mm, 160CFM rigged on one Cube as a test and it actually cooled much better than the Noctua, which is above 159CFM. The Delta is a very loud fan though, vacuum cleaner level of noise. I haven't tried it, but I wondered if funneling the 140mm down to 92mm would have the same effect.
I've also trimmed the now pointless E heatsinks down to a fat T, to make room for the heatsinks I ordered. If it works well, I'll post the details for everyone. If the KnC forum comes back up before I get around to posting more, the "Bonus Neptune - Formula 1 Pinto" thread is where I have all the pictures posted.