“Heroes of Might and Magic V: Tribes of the East”

The expansion has higher system requirements than the base game, so it might lag, but if it runs smoothly on the lowest settings, it rarely happens. I have a 128MB card.

Why does the expansion have higher system requirements? It's not much of a graphical improvement. If the original ran on 64MB, the expansion should run too.

P.S. The key word is should. :D