That's a full ATX motherboard, there's no such thing as a "small" case to take it. Any cube cases are going to be utterly massive.
About the smallest cases capable of taking a full ATX motherboard are ones where the power supply has been moved to the front of the case so they're not adding to the height of the case. Of course, you get variable results in the depth of the case.
I would suggest looking at Lian-Li PC-A5 series and PC-V7 series for examples.
http://www.lian-li.com/en/dt_portfolio/pc-a56/
http://www.lian-li.com/en/dt_portfolio/pc-v700/
I also have a similar style case in steel from iCute. I've had the case for quite some time and haven't been able to find it, or a successor, anywhere. Anyway, here's a review from 2006...