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

I used to play with 512 MB of RAM, and it lagged, but it was playable; now I have 1 GB, and it runs smoothly. I bought the HoMM 5 disc, and the packaging says the minimum video requirement is 64 MB, but in the Readme file on the disc, it says 128 MB. However, it seems to run on the lowest graphics settings, and I haven't tried anything higher. I'm not even sure if I'll be able to play "Stronghold."