Summary: Noctua products have always performed wonderful for me and the build quality is amazing, they don't go cheap. It's a bit big and a little heavy so make sure you have room in your case. I have it cooling a Phenom II X4 B50 at 3.3Ghz and it idles between 28c and 30c and during load it does not go above 42c.
Summary: I put in on my PhenomII x6 which was running at 43 idle, 50 under load. Once I replaced the original HS and put the Noctua SE14 my temps went to 38 idle, 45 under load. 5 deg difference was nice but the big difference was that I wasn't hearing the stock fan winding anymore! The new fan is quiet even under load, you also have options to put an in line resistor to slow down the Noctua fan to make it even quieter but it's quiet as is.
Summary: I recently built a MATX PC in a micro tower and this cooler fits perfectly. My i5 750 is overclocked to 3.5 GHz with a Vcore of 1.136 V and it idles 37C. Under load it reaches 45-50C. If you're getting this for a small form factor case then that's fine, but if you have room, get a cheaper tower-style cooler that will give you a little better performance. The quality is amazing as usual from Noctua.
Summary: Await receipt of this product, ordered on Feb 11, expect it in hand by Feb 16. Customer Service was great with the order... Kinds P'ed off that it's almost half cheaper at NCIX's website!! Correct me if I'm wrong...
Excerpt: Ce radiateur est top. Niveau sonore : Ultra silencieux (5 étoiles) Niveau de refroidissement : Au top (5 étoiles) Ce radiateur est vraiment imposant, alors avoir une grande tour. Ma configuration : Intel Core i7 4770K, Asus Z87-PLUS C2, Intel 335 - 180 Go, Noctua NH-C12P SE14 , Corsair VENGEANCE PRO GOLD 2 x 8 Go DDR3 PC19200 CAS11 , Sapphire Radeon R9 290 - 4 Go.