Simple logic states system would use more battery instead of as card now u want to talk about witch is faster if say system I mean your ad card could be faster guess it all depends on how much space as card has and how fast it is I know one thing people say it only runs microsd xc cards witch is a compatibility lie people tell u all the time just like how they say if you buy a apple phone if you want to use headphones they have to be apple headphones that is a lie or how they tell me that some computers that run do can't be upgraded to 10 which is also a lie any computer can upgrade to 10 the only thing compatibility is good to pay attention to is if your trying to find a game that fitts your specs of whatever system u got