Glob3trotters posted a review on the Noctua NH-U12S redux +NA-FK1 Second fan upgrade kit
A quote from the article:
When it comes to single tower CPU air coolers, most will think of a 120 mm (or a 92 mm) heatsink since it has been in the last decade or so, ground zero for a mental picture to what we compare and rate everything. Thus, Noctua has decided to expand their ‘redux’ line with their first full sample from this class.Noctua NH-U12S redux +NA-FK1 Second fan upgrade kit Review