Who manufactures the most 'reliable' LED fans? 120mm and/or 140mm

Kelthar

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Mar 27, 2013
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I'd say either Antec or CM, just like you said.

Although fans usually aren't an issue as long as you go for a known brand, because truth be told well-known brands are extremely unlikely to harm their own reputation because of something like fans. Corsair, for example, which produces good components, wouldn't want to have a bad reputation because they decided to save a dollar per fan and make them bad!