I'm pretty sure that some cases have to be big enough to support a heat sink. But there aren't any comparability issues with the Cpu/Motherboard, right?
Your case will either support ATX, E-ATX, mATX or any variant of ATX. ATX is the standard for motherboard sizes.
For CPU coolers, specifically ones with heatsinks, your case has to be wide enough. That's entirely up to you to make sure.
sorry bad wording on my part. I thought I heard someone could not fit a large heat sink in there case but I might just being going crazy. Thank you anyways! (forgot I started this thread sorry)