I need help in deciding whether to buy a GA-P55-US3L or GA-P55M-UD2 (Comparison). They cost about the same and have the same features (or at least the ones I am interested in) but the UD2 is mATX.
Are there any problems associated with mATX rather than ATX in terms of space or expansion ports or anything else? I notice that the UD2 has 3 fewer PCI Slots and is also smaller. Will a modern graphics card like an ATI 5770 still fit in there?
Note I am using an ATX/mATX case.