The pros and cons have been well documented here so I'll just stick with my experience. These are great fans, especially for the price. I installed two intake fans in the Antec GX500 Illusion chassis (7 fans in total, including CPU and GPU fans) and everything is very quiet. I run all the fans on low speed and the amount of air flowing through them is enough to keep everything inside cool, even during gaming. Some people are under the impression that you can set TWOCOOL to high speed and mute it, but the laws of physics still apply here, folks. The whole point of larger case fans is that you can keep them running at lower speeds and therefore reduce noise. I would definitely buy these fans again.
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