Quote Originally Posted by DBoone View Post
I have this combo and haven't had a single issue. I'm running a very mild OC at 3.6 on my 930 since this is my first effort at OC and water cooling. I do wish there was better air flow though.
I can also confirm that I have the Corsair Obsidian 800D and R3E with no problems at all, infact I love this case it's by far the best I've ever had.

The only way I can see someone encoutering a problem with this combination is most likely through user error.

i.e. your M-ATX risers are in place when you'r installing an ATX board, or some other issue like forcing cables behind the motherboard.