The NZXT H9 Elite (2024) is the objective winner of this comparison, securing six out of eight total specification categories. Its most significant advantage over the Lian Li O11 Air Mini is its storage capacity for smaller drives, offering a 100% improvement in 2.5" bay availability. This superior configuration in the majority of measured metrics establishes the NZXT H9 Elite (2024) as the more versatile option for users prioritizing modern drive mounting options within their system build.

Users who require extensive storage for 2.5" drives should select the NZXT H9 Elite (2024) to take advantage of its doubled capacity. Conversely, the Lian Li O11 Air Mini remains the better choice for builders who prioritize 3.5" drive support, as it provides a 100% advantage in that specific category. Choosing between these two cases depends entirely on whether your storage configuration relies more heavily on larger mechanical drives or smaller solid-state drives.