Well, at least with Gigabyte boards the VRM sinks are wider than they were on the Z77 boards and noticeably reduces clearance around the socket, the clearance on the RAM side is the same. On the z87 board there's no space at all between the sink and the cooler mounting holes.
The images below are of the Z77X-UD5H and the Z87X-UD5H.
Looked at my build log, the H220 doesn't look like it would fit on the Z87x-UD5h because of these wider sinks.
Edited by Skullwipe - 6/17/13 at 5:24pm