[citation][nom]omnimodis78[/nom]To be honest, I'm also a little annoyed by the 680 benchmark nvidia keeps quoting in their improvements. If the drivers are tuned, shouldn't the performance gain be essentially the same percentage all across the board? So a 40% performance increase on a 680 doesn't mean a 40% improvement on a 670, or a 660? Maybe someone who actually has the knowledge can articulate why this point is wrong.[/citation]
It seems like you and others have taken the release notes too literally. Please do read the notes carefully:
"Increases performance for Geforce 400/500/600 series" - Means the GTX 670 and 660 will also see performance gains. In fact, means just about any card sold over the past 5 years could see performance gains.
"Results will vary depending on your GPU and system configuration" - Means that not everyone will see the same level of improvement. The amount of the performance gain could be the same, could be less, or it could even be more.
"Up to 41% improvement in Bioshock Infinite" - Means anything between 1% - 41%. It does not literally mean that every single GTX 680 user will only and always experience exactly a 41% boost in that game. It also says nothing about what to expect with other GPU's. Again, the gains could be more, could be less, or could be exactly the same.