AMD continues to work on new ATI graphics and this time we have a chance to see two new models HD Radeon 4850 X2 and 4870 X2. Both GPUs are designed as top level models and feature two GPU chips on a 625 or 750MHz bus, respectively, with up to 2GB of 900MHz GDDR5 RAM. With paired processors achieved speed is over 20% better that competitive NVIDIA GTX 280 and able to match with dual 280 setup. Expected release date is somewhere in September and prices are $399 for 4850 X2 and $599 for 4870 X2.