Pros: cools better than the fan/heatsink that had died. Copper. Solid. Clean. Comes with aluminium RAM heatsinks. I put one on my Raspberry Pi SoC. The rest went in the trash.
Cons: Seriously? the lights. What is the point of putting a little blue and red light on this? Even just one or the other wouldn't make it look like a police car. Save the few cents that the lights cost and make the fan of a little higher quality. Not really good for video card setups. The mount holes ...
Pros: Works great as a northbridge or southbridge replacement cooler, or for small HTPC cards. The setup is the circumference of the top of a pop can. I'm glad it came with thermal paste and 8 copper heatsinks I can stick to things.
Summary: Originally used it in an older computer which didn't have the correct wire ends. I soldered in the plug from the old fan and plugged it back into the card. This is, of course, not what the manufacturer would recommend.
Pros: I installed it on a FireGL V3100. I don't have a way to measure temps right now but with all of that copper mass it has to be cooling better than my stock fan did. Installed onto the card easily except for the wiring.
Cons: It is a little bit too loud but I'm not sure a 45mm fan could be much quieter though.