That is actually wrong information.
The H100 is a
dual fan hydrocooler and fits perfectly fine in the top of the H100.
I have this configuration and it works fantastically keeping my CPU cool and fairly quiet
The way you have to install it is a bit weird, but it works fine and the fans have to be placed in the recess at the top where the panel comes off, with the radiator underneath inside the system under the mesh. If you look you can see the gromits and holes where the fans screw through to the radiator like shown in the linked image below ;
http://assets.overclock.net.s3.amazo...ach225904.jpeg