H100i in the R4 using the Sabertooth 87z

Hey so I am looking into replacing my stock heatsink, with the H100i. The problem that I have is that people say that the H100i won't fit in the R4 because of the lack of space. So I was wandering if anyone have experience with the H100i in the R4 using the sabertooth 87z. Or if there is other solution that is easier and or better.

Also I will be using the noctua nf-f12 fans

you might be better off going for the h80i/h60 as both are smaller and cheaper and moderate over-clocking should be no problem with these. 

The H100i will fit but I would suggest a Noctua cooler, it will do as good or better than the H100i.