The NZXT H7 Flow is the objective winner of this comparison, securing more category wins across the evaluated specifications. Its most significant advantage over the competition is the storage capacity, as the NZXT H7 Flow offers 100% more 2.5" bays than the alternative. This increased drive support provides a clear edge for users prioritizing internal storage expansion within their system build.

Users who require extensive storage configurations should select the NZXT H7 Flow to utilize its superior bay count. Conversely, those who prioritize out-of-the-box cooling performance should choose the Phanteks G400A, which provides a 100% advantage in the number of included fans. Selecting between these two cases depends entirely on whether your build necessitates additional drive mounting points or a higher quantity of pre-installed cooling hardware.