Originally Posted by slaWter
3GB is the easiest method to increase the memory for a 580 card. That's why they went with 3GB.
Of course more GPU power is necessary as well. That's the beauty of a 3x30" setup - it eats GPUs for breakfast and you're always in the need for the next best thing
Yeah, thats what I didn't like about the 580 in the first place. 1.5GB wasn't much of an increase over my 1gb 5870s so I was forced to go with 2gb 6970's pretty much. Now they have the 3gb that you can't even use. From one extreme to the other pretty much. Oh well, they are still great cards.