Ok but will it follow the lower spec card on everything? I know you can point to the clock and shader pipelines or whatever theyre called but their are new features constantly being developed and pushed. Do you know if all those features are cut down to the lowest cards setting?
I thought you might need similar cards because each card technically draws half the scene so even if it was faster the card would still need to wait for the 2nd card to finish up. But couldnt things go beyond that? They have already with the ability to offload the physX calculations to any physX based GPU you have lying around. Arent the more features besides physX that another cheaper card could dedicate itself to to free up your best card for the big load?