The be quiet! Silent Base 802 is the objective winner of this comparison, securing victory in five out of eight evaluated categories. Its most significant advantage is its storage capacity, offering 250% more 2.5" drive bays than the competition. This superior hardware support makes it the more versatile choice for users requiring extensive internal drive configurations. While the Phanteks G400A falls behind in total spec wins, it remains a competitive option for those prioritizing cost-efficiency.

Choose the be quiet! Silent Base 802 if your build requires maximum storage expansion and a higher volume of supported features. It is the ideal selection for workstation setups or users with complex hardware needs. Conversely, select the Phanteks G400A if your primary goal is to minimize your initial investment, as it offers a 56% better MSRP. This model is best suited for budget-conscious builders who prioritize affordability over the expanded drive capacity found in the alternative.