Pros: Don't be fooled by its small size. This thing can cool very well. It's very low profile and fits in my SG-05. On 1200 RPM it keeps my I7-4771 around 28-30C on idle and around 40-45C during gameplay. It was very easy to install. Backplate ensures solid installation.
Pros: Clearance above the DIMM well designed, low profile (comparable to stock cooler) to fit in small m-ITX case. Quiet on low settings.
Cons: The diameters of the fins-heatsink are larger than the base plate holes, meaning if the CPU socket is close to the edge of motherboard the heatsink extends beyond the edge, which can be a problem in certain case. Also if the RPM is hight (e.g. 1500 rpm) the noise is fairly audible. Below 1000 rpm it is fairly quiet.
Pros: Small, well built and decently quiet. It barely fits on the Maximus VI impact though it does touch the VRM heatsink. I had to pull the heatspreader off the ram closest to the HSF. 78C on a 4770k @ 4.4ghz.
Cons: Uses a funky adaptor on the fan wire, having this does allow you to thread the wire through the heatpipe but it also gives you something to lose.
Pros: Nice build quality. Does fit in the Silverstone FT03 Mini.
Cons: This cooler needs to be oriented correctly so the heatpipes follow the cpu die. On an ASRock Z87 ITX board, the heatsink hits even low profile memory. It will fit the other way, but with the heatpipes not covering enough of the die, it is not an effective cooler.
Summary: I installed the CPU first, so I haven't yet tried to see if the RAM truly fits in the first slot, but I'd have to take off the fan to do so. If you DO get ram, a tip is to get low-profile!
Pros: This little fan is fantastic. I recently built a whole new tower and it's keeping my AMD FX-8350 nice and cool. What's a nice little side note is it also cools down the parts around the CPU.
Cons: I understand it's low profile, but jeez! On my ASUS Sabertooth 990FX R2.0 I can't use the RAM slot closest to the CPU. I'm not taking an egg off because I'm only intending on using a 2-stick set-up, and it's my fault for not studying this fan enough.
Pros: Quiet, nice low profile. I don't have an unlocked CPU, but I wanted a quiet replacement for the stock fan. This definitely works as advertised. I've set the fan speeds so that it remains at the lowest setting and my cpu hardly reaches 50 C, even under heavy load in a small, hot case.