We have not heard a lot out of AMD regarding their 3-D display technology in recent weeks. However, with the release of the AMD Radeon HD 6870 and the Radeon HD 6850, AMD has updated their website with more information. Currently the 5000 series and 6000 series of graphics cards from AMD supports what AMD is calling its HD3D Technology. However, only the latest graphics cards, the Radeon HD 6870 and 6850, support GPU-accelerated 3-D Blu-Ray. Therefore, if you really want that, you should go with the latest graphics cards.

Anton over at the 3-D Vision Blog has more information on the HD3D Technology.

One important thing again related to the new Radeon HD 6850/6870 GPUs is the fact that they do come with DisplayPort 1.2 and HDMI 1.4a connectors that both do support stereoscopic 3D output. Of course we are yet to see some 120Hz LCD monitors that do use DisplayPort, however the availability of HDMI 1.4a ensures compatibility with all the 3D-capable consumer hardware such as 3D HDTVs already available and the upcoming 3D home cinema projectors with the same interface. So the new GPUs do have support for HDMI 1.4a and the frame packing specifications used for stereo 3D content distribution over the interface, however you still need to have something to provide the 3D content, so you still need the iZ3D Driver or TriDef’s Ignition software to convert games for example, or a software Blu-ray 3D player to output the movie.

via AMD With New 6800 series GPUs and the AMD HD3D Technology @ 3D Vision Blog