I take it's a radeon 4800 series card, not actually a 4800 - not sure if there is such a thing. If there is then ouch.|
The requirements list on Steam looks like it's borked, has the same spec for minimum and recommended.
Re: game length - there is a thread on the Steam hub for Dishonored complaining that the game only lasted 14 hours. Not sure if they're trolling, but there's the usual furious argumnet going on.
#9077361, By neems Dishonored
neems 3,109 posts
Seen 32 minutes ago
Registered 9 years ago