The Dark Rock series from be quiet! had to this point been on the larger side of CPU air cooler designs, but not everyone wants (or can even use) a large heatsink. And while be quiet! already has a lower-profile version in the Dark Rock TF, with the Dark Rock Slim the German company adds a slim, single-tower design to the family. First revealed at CES 2019, the be quiet! Dark Rock Slim was officially launched in May, offering a premium take on the narrow single tower design of coolers like the ubiquitous Cooler Master Hyper 212 EVO, and boasting a cooling potential of up to 180W. So how does the Dark Rock Slim perform? And how does that Hyper 212 EVO fit into all of this? Let’s get started! “The Dark Rock Slim offers an exceptionally high cooling performance of 180W TDP and virtually inaudible operation. Perfect for high-end builds with limited space.” The Dark Rock Slim arrives in the customarily well-protected packaging of a be quiet! product, and inside the box the heatsink and fan are encased separately in foam, with a box of installation hardware for both Intel and AMD systems. We’ll look first at the heatsink, which measures 47.4 mm thick, 127 mm wide, and 159.4 mm tall. ...