Today we will focus on the KÜHLER H2O 920, the larger variant of the series. Thomas previously reviewed the unit in his water-cooling shootout and found it to be a solid performer despite not quite matching a custom kit. In today’s review, we will compare the unit against an array of air coolers to see if the 920 has what it takes to dethrone the Thermalright Silver Arrow and Noctua NH-D14.