Icrontic has published a review of two heatsinks, the Noctua NH-U12P and the SilverStone Nitrogon NT06-Lite.  These are two very different coolers, the Noctua is designed for heavier usage, while teh SilverStone is intended for lighter duty, as the name might imply.  Each fills their targeted roll quite well, as you can read in the full review.

“Put simply, the Noctua NH-U12P is a fantastic heatsink. It is a phenomenal performer on both LGA775 and AM2 platforms, is not overly large or heavy and has the best mounting system I have seen to date. The lower fin density of the NH-U12P means that it performs remarkably well with near-silent fans.”

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