Radeon HD 6870 has 151W TDP

2 TFlops, 19W idle, 1120 stream Processors
We can tell you that the TDP is 151W at load and 19W at idle. The card still needs two dual 6-pin power connectors as it’s just over the magical 150W mark. AMD wanted to be sure that these cards will work on lousier power supplies and didn’t want to take any risks.
The Radeon HD 6870 offers HDMI output as well as two mini DisplayPorts capable of supporting 1.2 devices and two DVIs. The card is dual slot and will end up with some retail partner sticker.
The card has 32ROPs and it's capable of 2.0 TFLOPs.