The Phanteks G400A is the objective winner of this comparison, securing more category wins across the evaluated specifications. Its most significant advantage over the competition is the inclusion of fans, which provides a 100% improvement in out-of-the-box cooling hardware. While both cases offer comparable features in several areas, the Phanteks G400A establishes a clear lead by prioritizing essential airflow components that are otherwise absent or limited in the alternative model.

Users who prioritize a complete cooling solution without the need for additional hardware purchases should choose the Phanteks G400A. Conversely, those who intend to utilize larger air cooling solutions should opt for the Thermaltake The Tower 300, as it offers a 24% advantage in maximum cooler height. Selecting between these two cases depends entirely on whether your build requires the superior fan configuration of the Phanteks or the increased vertical clearance provided by the Thermaltake.