luckiest charm said:
They are giving you more performance than HD 7870 and equal to HD 7950.
What makes you trade those? There must be some issues with the cards or perhaps you are encountering heavy sluttering in games? Whatever it is, you should mention your reasons so other trader does not find it out the hard way.
They are new, and in perfect condition. My MOBO doesn't support CrossFireX. They both are in great working condition.