Originally Posted by 
Vapor
				 
			Okay...previous post is too long to add to, and I have more to say.
Here's what I think of the Nirvana:
It's not competition to the Ultima-90, the TRUE, the Infinity/Mugen, the Tuniq, or the IFX-14, or any of them.  It's competition to other HSFs with built-in fans.  Zalmans and other Zerotherms mostly.  Thermaltake has one here and there, as to a few other manus, but the market is small.  The fans are built-in for 2-3 reasons:
1) Aesthetics....some people like it and some companies think people like it and it will sell.  It does.
2) Simplicity....nothing to install onto the heatsink, 'just' install the heatsink and go.
3) End user control....to minimize users complaining about performance from poor fannage, they slap on a fan they know does well.
Yes, you can install a different fan onto it, but that's just not what it was built for...it's not an elegant solution either...