SweClockers.com has posted a video of the new MSI Radeon HD 6990. It is kind of fun to listen to the video and see what words I do understand, even though I do not speak Swedish. However, thanks to Google, we can translate what they wrote:

The upcoming super-hot video card Radeon HD 6990 makes an appearance at Cebit 2011

Never mind. We already knew that. What we did not know was the GPU core speed and memory speeds. Those have been recently revealed by Hexus.net. Hexus.net says that the AMD Radeon HD 6990 will have a core speed of 800 MHz and an effective memory clock of 4.5 GHz. However, Fudzilla is reporting the 6990 will have a core speed of 830 MHz and an effective memory clock of 5.0 GHz. Perhaps the difference is that someone is wrong, or perhaps the difference is that some board makers will be selling an overclocked version of the card. Until it is released, you can treat it as rumors.

The AMD Radeon HD 6970 currently has a core speed of 880 MHz and an effective memory clock of 5.5 GHz. This makes the dual GPU AMD Radeon HD 6990 slower than the 6970, but that is to be expected since they need to limit the amount of power that it uses, as well as limit the amount of heat that it generates. Since the 6990 does have two GPUs, one could expect that it would have 3072 stream processors, 192 texture units, and 4GB of GDDR5. Of course, that is just simply doubling the specs of the 6970. The rumored release date for the 6990 is March 8th.