I know the 780m is significantly better than the 770m. It also costs significantly more. I plan to get a laptop for mostly work stuff that doesn't require much power at all, but I also play a lot of WoW and and other "lighter" games like SC2, DoTA2, TF2, etc. Would a 780m be justified for running those games on high or very high settings, or is it needless overkill. I really don't want to spend money if I don't have to. I am also looking into Sager notebooks, so the card will be upgradable down the road. Thanks.