The be quiet! Pure Base 500DX 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 for smaller drives, offering 150% more 2.5" bays than the alternative. This superior configuration makes the be quiet! Pure Base 500DX the more versatile choice for users prioritizing high-density solid-state storage within their system build.

Users who require extensive space for 2.5" drives should select the be quiet! Pure Base 500DX for its clear advantage in that category. Conversely, the Lian Li O11 Air Mini is the better option for those who prioritize mechanical storage, as it provides 100% more 3.5" bays than its counterpart. Choosing between these two cases depends entirely on whether your specific build configuration demands a higher volume of small-form-factor drives or traditional hard disk drives.