AMD Cayman info (or rumor)

[zerazax]

They only need the driver rewrite if it doesn't performs as high as they wanted. That is, beating a gtx 580.

From a hardware perspective, I think the 6970 has the innards of a card that can beat a gtx 580. But it isn't going to be super easy and I think the delayed launch meant that it might have not won that battle and drivers are going through heavy revisions to get it to that level.

From how a few reliable rumors leakers from AMD side were going on, it seemed like AMD could have released the 6970 the same week as NV released the gtx 580. Something tells me AMD delayed it because the card probably beat a gtx 480 but not a gtx 580.

Why do people keep insisting its performance? First people think they can juts change BIOS and clocks within 3 weeks, now people think drivers are going to give a significant boost in 3 weeks rather than over the course of months? Those would have to be a hell of a driver change to get the card from 480 to 580 levels

Far and away the most likely issue is components or manufacturing delays for the timeframe we are talking about at this point.

6850 is extremely inefficient in terms of mem BW usage (mem BW scaling is better than on cypress), i bet that Cayman will have a significantly more efficient memory controller like cypress did and will make up for the rest with a higher mem BW

They've said that Barts used Redwood's mem controller. Cypress is significantly more complex