AMD will launch in few days (April 5th 2011) a new graphics card based on the Barts GPU: the Radeon HD 6790. This new card will have 800 stream processors and uses the VLIW5 architecture (then the GPU is made up of 160 vec5 units) like Radeon HD 6850 or HD 6870. The HD 6790 GPU is clocked at 840MHz and the board embarks 1024MB of GDDR5 memory at 1050MHZ real speed.
In the power consumption side, the TDP is 150W (and 19W in idle) and the board is equipped with two 6-pin power connectors.
The Radeon HD 6850 has a TDP of 127W while the HD 6870 has a TDP of 151W. The 150W of the HD 6790 are a bit strange because this card shows less performance on the paper so why such a high power consumption?