Arcania - Technik-Check @ GameStar
GameStar.de posted a detailed article on Arcania's effective system requirements and the differences between the available graphics options. Many before & after comparisons are included. Limited German should be enough to understand what's going on.
The release patch JoWooD announced (see other newsbit nearby) sounds like a good idea. GameStar thinks Arcania stutters even on high-end PCs.
Platform: PC, Xbox 360, PS3