According to the US Department of Labor, if you are working in an indoor environment in the summer, the air conditioner should be set at 76F or below, with humidity between 20% and 60%. Now, for everyone else in the world that uses a real system of measurement, also known as the metric system, this will be 24.4c. Why is it important indoor workplaces are kept within this range? Well, for one thing, it is the law. But even if it was not the law, I am sure most reasonable employers -- especially those in the professional environment -- will be happy to oblige. A healthy and happy employee will be more productive. Try doing accounting work or designing a car when it is hot and humid inside, haha. On the other hand, it is important not to take cooling to the extreme. According to the same law, the minimum temperature standard -- although this is probably related to heating in the winter, rather than cooling in the summer, but regardless of which -- is 68F, or 20c. Recently, my visited Taiwan and Hong Kong, and she said she set the air conditioner at 19c, because it was too hot outside. Clearly, my friend did not understand human beings have an optimal operating temperature, so I told her to might as well sit in a freezer to simulate a Canadian winter instead. ("The freezers in Hong Kong are mini sized," she said. "I am not that mini you know!") Is there such thing as setting the temperature too low? For human beings, definitely. But how about computer processors? Generally speaking, for any normal, sustainable method, the cooler, the better. Today, we will take a look at the newest big daddy of all air coolers, the Noctua NH-D15S. Evolved from the NH-D14 and NH-D15, both mega-sized heatsinks that took air cooling to the extreme, but often criticized for blocking RAM and PCIe slots, the NH-D15S promises to retain the same epic performance, all without the epic interference. Was Noctua successful? Well, let us find out.