It seems like everyone is getting into the All-In-One CPU cooler business these days. Even the well-established case- and accessory-maker NZXT has gotten into the act, offering the Kraken line of CPU coolers. The Kraken lineup comes with room for one or two fans, at 120 mm and 140 mm. They always cool well in reviews. But the updated line promise to cool quietly as well. So let’s have a look at the X31, shall we?