I have the Define R4, and got a h100i for it (only cooler that I could get immediately honestly would've gone for a good air cooled heatsink instead). It wouldn't fit dead in the center of the top of the case because of the CPU power connector, but there was screw holes for it to be off to the side a bit. Current problem though is that there's a good almost inch gap to the side of it right above the motherboard (I can see the code it spits out on the digital display without opening the case, so thats useful I guess). My concern is that this is gonna bring a good amount of dust in. Anyone else out there with similar setups and possible solutions for this? Is it fine to just leave it but then have to clean it once in a while?
Pic of the case from the top:
Pic of the case from the top: