The case I have is the Antec 1200 Full Tower. I do have the Kingston HyperX ram heatsink (fan) on top of the memory. Might be a tight fit, but I think it will work, the Dark Knight seems more narrow in size then the one I have in my case now. Will try to get the Dark Knight to face out the back to continue the great air flow that the Antec 1200 provides.