The be quiet! Dark Base Pro 901 is the objective winner of this comparison, securing a lead in six out of eight evaluated specifications. Its most significant advantage over the competition is its storage capacity, offering 150% more 2.5" drive bays. This superior internal configuration makes the be quiet! Dark Base Pro 901 the more versatile choice for users prioritizing extensive hardware expansion and storage density within their system build.

Users who require maximum storage flexibility should choose the be quiet! Dark Base Pro 901 for its superior bay count. Conversely, the Corsair 5000T RGB is the better option for builders who prioritize out-of-the-box cooling hardware, as it provides 133% more included fans than its counterpart. Selecting between these two cases depends entirely on whether your primary build requirement is high-capacity drive support or a more comprehensive pre-installed fan array.