I am in the process of building a computer on paper first, so I do not know if the Corsair 650D CPU Backplate Cutout is large enough for the Corsair Hydro Series H90 (140mm) fan or if the cutout is just large enough for the Fan Unit or if it is in fact only large enough for the attachment to the CPU and the hoses to fit through. I have read both the Overview and the Specifications Sheets on the 650D Mid Tower Case and I cannot find any reference to the size of the CPU Backplate dimensions...therefore I am not sure about this issue until I ask those of you that know.