Ok my current case is about 7years old 
I might be picking up a 390 today. And i know my current case wont be able to fit a 390 i barely got my 280 in.
After looking at some of the case they only seem to give you the external dimensions. Should i be worried in terms of internal space for gpus or are all cases pretty much the same?

I might be picking up a 390 today. And i know my current case wont be able to fit a 390 i barely got my 280 in.
After looking at some of the case they only seem to give you the external dimensions. Should i be worried in terms of internal space for gpus or are all cases pretty much the same?