Pros: I just installed it and this thing is huge definitely make sure to get the dimensions and check to see if it will cover your ram slots on the mobo. I can only install two sticks of ram on mine. But i didnt measure it. The instructions were great and installation was easy with one exception. Other than that Good heatsink. Note: This is per installation not per running it yet. :)
Cons: Installation of fan clips is annoying at best. Instructions indicate to install fan clips after installed on cpu.... Makes it difficult to install. The motherboard i bought is listed as compatible on noctua's website but they fail to mention that it covers a ram slot. If you buy this measure first and if not plan on using only two sticks of ram instead of four. -price
Excerpt: quite good price tag Will not mount on an ASUS P6x58D Premium in a Cooler Master CM 690 II. All the measurements show that it must fit, but the way the motherboard sits puts the lower mounting holes slightly beneath the bottom edge of the cutout, and leaves a ton of space at the prime. I have emailed Cooler Master to see if there is an additional plate I can purchse, but have not received a response.
Summary: very quiet with the atenuators, keeps it nice and cool but this thing is like a freakin tower block! i have a coolermaster wave case wich is quite big and this thing clears that by half an inch"!!