The Phanteks NV5 is the objective winner of this comparison, securing more category victories across the evaluated specifications. Its most significant advantage over the Phanteks G400A is the inclusion of 2.5" drive bays, which offer a 100% improvement in capacity for smaller storage drives. While both cases share equal standing in two areas, the Phanteks NV5 provides a more robust configuration for users prioritizing modern storage layouts over the traditional drive support found in the alternative.

Choose the Phanteks G400A if your build requires extensive 3.5" drive support, as it offers a 100% advantage in that specific metric. Conversely, select the Phanteks NV5 if your system relies on 2.5" drives, as it doubles the available capacity for those components. By aligning your storage requirements with these distinct bay configurations, you can ensure the selected chassis effectively accommodates your specific hardware needs without unnecessary compromises.