I need a video card that to play high end games and play HD videos which card is better 8800GT or Ati HD 3870?

i need a card that works better in HD and high end gaming not just gaming ....and whats Purevideo is just like ati VIVO ....



not looking for card like 8800GTX ,or 9800GTX too expensive for and if 8800 GT is better at games does it also better at HD agming ...how about the image quality i hear ATI is better at this ? so any tips would be nice thanks ?|||I'm an Nvidia fanboy so i would go with the 8800 GT, if you are getting the 3870 X2 then go for the ATI but if they are both single cards, then the 8800 GT, good price, and overclocking abilities, and a newly designed card, so get the new design one