"WE'VE SPENT A fair bit of time over the last month pondering the upcoming Radeon series from AMD. Specifically, the card which is rumored to be the 6770 is of interest. Sure the bigger cards get the crowns and bigger fanfare but this should be a card that most of us are more likely to buy given the price ranges.

The 6770, or Barts, has been rumored to have a 256 bit memory bus. This seems to break Radeon tradition in this price category. A 128 bit bus is simpler, takes up less die space and saves a little on the PCB. Keeping costs down is a definite AMD/ATi strategy as of late. A few dollars here and there really makes a difference on these cards. Why would AMD want to increase costs? Is a bigger memory controller really going to make a worthwhile difference? Many are saying no, Barts doesn't need twice the bandwidth of Juniper. Does it? Lets examine."

http://www.semiaccurate.com/2010/09/...islands-barts/