I'm using an H110 inside the HAF X at the moment.
I stuck mine inside the case up top under the 200mm fans, didn't line up. I got 1 screw holding it in and used 2 bread ties. The rad isn't wide enough to fit across the top, so my other screw holes didn't line up.
It will possibly fit up top if you remove the 200mm fan and sit it under the top panel.