The Lian Li Lancool 216 is the objective winner of this comparison, securing victories in five out of eight evaluated specifications. Its most significant advantage is a 29% larger maximum radiator support compared to the alternative. This superior cooling capacity makes it the more versatile choice for users prioritizing high-performance thermal management and liquid cooling configurations within their system build.

Choose the Lian Li Lancool 216 if your primary goal is maximizing radiator compatibility for advanced cooling setups. Conversely, select the Lian Li O11 Air Mini if your build requires higher storage density, as it offers a 33% advantage in 3.5-inch drive bay capacity. These distinct hardware priorities define which chassis better serves your specific storage or thermal requirements.