"The coolers I have tested from Noctua have so far been made for the high thermal loads you see with overclocking. They are by nature massive and capable of moving large volumes of air, and of course they stand out on any motherboard. While large coolers are impressive and fun to show off, for small form factor builds you need a cooler that can get the job done in a small space. And that is just what the NH-L9x65 does. The engineering that went into the entire package for the NH-L9x65 is remarkable, from literally the box and internal packaging, to the installation hardware, cooler, and fan. But if you have ever used a Noctua cooler (and I mean this as a compliment), this is just another day at the office."
red454 - OverclockersClub.
Noctua NH-L9x65 lower profile CPU cooler review by OverclockersClub - Introduction & Conclusion.