Soldato
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I read somewhere that the demo's we've all seen so far are running on 2 x GTX580's in SLI mode. Also the demo we are all playing is a slightly modified alpha. The reason why we have not got all of the eye candy yet is simple, bandwith costs money ! They have given us all a taste of things to come. It's a "beta" demo at the end of the day. When the game actually comes out in a few weeks time, people will be able to see BF in all it's glory.
What is interesting is that because that map was for 64 players (rather than the 32 players of the Operation Metro map) and that it included a MUCH larger open space, we were worried that it would require a lot more GPU horsepower or memory than the map everyone is playing on today. While we can't say for 100% certainty because we haven't tested as many cards, it looks like there is only a minimal impact on performance for the client: