Noises About Radeon HD 7900 Series with XDR2 Memory Grow
 

As early as in September, we heard reports of AMD toying with Rambus XDR2 memory on its next generation of high-performance GPUs. Apart from our own community's response, that news met with a wall of skepticism as it was deficient in plausibility. New reports from Chinese websites have raised the topic again with fresh rumors that AMD will attempt to implement XDR2 on some of its next-generation ultra-high end products after all. XDR2, according to Rambus, can transport twice the amount of data per clock as GDDR5.

Apparently AMD and Rambus have had much more cordial relations with each other, than other companies the latter engaged in patent disputes with. In 2006, AMD settled outstanding disputes with Rambus by willing to pay licensing costs for certain technologies claimed by Rambus, turning a leaf in the relations between the two. What Chinese sources are suggesting now, is that AMD will design its high-end GPU (codename: "Tahiti") in a way that will let it support both GDDR5 and XDR2. Certain higher-end SKUs based on Tahiti will use XDR2, while the slightly more cost-effective SKUs will use GDDR5.

http://www.techpowerup.com/155491/No...mory-Grow.html