The top of the line, called Radeon HD 4870 X2 2GB will have 2GB of GDDR5, the runner up is the Radeon HD 4850 X2 with 2GB of GDDR3.
There will certainly be the price difference between GDDR5 and GDDR3 version of the card and it looks that GDDR3 based Radeon 4850 X2 comes a month later.
AMD has two Radeon HD 4850 X2 cards
Posted on Thursday, July 10 2008 @ 0:10 CEST by Thomas De Maesschalck