Summary: Noctua's low profile NH-L9i heatsink stands 36mm tall so it will fit into the smallest of small form factor chassis. The NH-L9i is designed to cool Intel socket LGA115x (1155/1156/1150) processors only, which is a departure from the one-size-fits-all approach we're used to.
Conclusion: Performance numbers on the i3 were nearly identical to the stock cooler. The Noctua kept it 1-2 degrees cooler, and that is impressive for a cooler that is as low in height as it is. What I did get, was beautiful silence! My test bench is open air.
Summary: The NH-L9i low profile Intel CPU cooler may not be the cooler of choice for the typical computer, but it is an excellent choice for those building up an extremely compact small form factor system.
Pros: » Ultra compact, » Quiet straight out of the box, but low noise adapter makes it nearly silent, » Impressive performance for such a little cooler, » Simple installation
Cons: » 65W TDP rules out some popular Intel CPUs for use with this cooler, » Priced close to $50 (US)
Summary: The Noctua NH-L9i is a premium heatsink designed for systems where space is an issue and noise control is of utmost importance like a HTPC and SFF (Small Form Factor) PC. These systems often feature half height chassis designs and sometimes have the PSU directly over the CPU both of which limit the...
Pros: Low Profile Cooler, Silent Operation, Large Mass Design, Better Than OEM, Perfect for HTPC
Cons: Limited heat capacity, Clearance issues with some pwm heatsinks
Excerpt: Noctua is company known for high quality and excellent performing CPU coolers and fans. It’s safe to say that most of their product line is aimed at the high end user who wants to push their system or CPU to the limits.
Summary: The Noctua NH-L9i is a very well-made, low-profile CPU cooler, with the same construction quality we are accustomed to seeing in other coolers from this manufacturer.
However, there is no point in comparing the cooling performance of such a low-profile cooler to the high-end tower coolers.
Summary: It has been a long time since I've looked at a traditional HSF. My last few cooling reviews have been of high-end liquid cooling solutions so the change was quite dramatic going with the Noctua NH-L9i. Let's make one thing perfect clear - the quality of this cooler is stellar.
Pros: Good performance, Very low profile, Easy installation, Quiet, High quality construction
Cons: Base finish is a little rough, Price is a tad high for the performance
Summary: Naturally, the Noctua NH-L9i can't compare to some of the larger CPU coolers on the market. Against the Noctua NH-L12 , arguably the premiere small heatsink, you can expect a hit of 15~20°C and that's with the NH-L12 in its shorter 66 mm tall, single 120 mm fan configuration.