http://bf4central.com/2013/08/best-graphics-cards-for-battlefield-4/ Where did you find the post stating that ultra need 3GB of VRAM? Either way, both classes of graphics card scale to 3GB so that's not a problem. Sure, the AMD cards, though optimized for BF4, benchmark lower than the Nvidia class. However, both types of card will give you remarkable performance. It's not like this is the difference between 15fps and 25fps. This is more like the difference between 60fps and 80fps. You simply won't notice. That being said, I would go with the 7970's because they cost much less, assuming you need 3GB or more of VRAM.