Cooling performance was at the high end (higher temperature) of the comparison field. Turn up the heat, and the Dragonfly 4 struggles a bit to keep the temps down. The Dragonfly 4 is not likely targeted at systems that are regularly pushed to the thermal limits, so keeping that in mind, if you don't overclock or tax your CPU with a heavy workload for long periods of time, then the Dragonfly can keep up. Adding a second fan may help a little, but air flow is only part of the equation, and a smaller cooler just doesn't have the surface area that a large cooler has. But for cooling that is much better than stock, the Dragonfly gets the job done quietly, and with an unobstructed design.