A:Answer It honestly depends on your motherboard because this case is very compact and thus does not have much clearance for an aio up top. However, the height of the ram slots differ between motherboards and I know that some motherboards with lower ram slots can fit an aio in this case. In my experience with this case, Vengeance RGB Pro Ram, Corsair SP120 fans, and a gigabyte x570 Aorus Elite Mobo, an aio would not fit because the ram slots are relatively high on the board.