Does Two Graphics card really make a difference?

[Whirlwind]

Here is a sreenshot of STALKER SoC.....check out how much each card is being used...the top left hand corner will show it.

This is a game that scales really well....I wish all games were like this.



I guess it is hard to see...but the game is using 95% of one card and 96% of the other card.