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

The Corsair 2500X is the preferred choice for budget-conscious builders, as it holds a 44% advantage in MSRP. Users who prioritize a lower initial cost over the extensive drive support found in the be quiet! Dark Base Pro 901 should select the Corsair 2500X. While the latter offers fewer overall features, its pricing makes it a practical alternative for those who do not require the high-density storage capabilities of the former.