Mounting a CPU Cooler? The Heatpipe Direction Might Matter
 

"We recently tested the newest cooler from Noctua, the NH-C12P. We received many e-mails questioning the way we, well I, had the cooler oriented. Noctua themselves emailed us as well with concerns on how we tested their product. So, due to the requests of the readers, and the manufacturer as well, we decided to re-visit the cooler to see how the CPU temperatures are affected by different mounting positions."
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*Source: Legit Reviews (http://legitreviews.com/article/741/1/)*

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