The NZXT H9 Elite (2024) is the objective winner of this comparison, securing six out of eight total specification categories. Its most impactful advantage over the Lian Li O11 Air Mini is a 100% increase in 2.5" drive bay capacity. While the Lian Li O11 Air Mini holds its own in specific storage configurations, the NZXT H9 Elite (2024) demonstrates superior versatility across the majority of the measured technical specifications.

Users who prioritize high-density 2.5" storage for multiple solid-state drives should choose the NZXT H9 Elite (2024) to maximize their internal mounting options. Conversely, the Lian Li O11 Air Mini is the better selection for builders who require a higher capacity for 3.5" hard drives, as it offers a 100% advantage in that specific storage category. Select the case that aligns with your specific drive requirements to ensure your hardware fits your storage needs.