ATI Partners planning HD4890X2 Video Cards
 

At current ratio, the ATI Radeon HD 4890 draws 190W from the wall socket, hence the Maximum current draw of 225W [75W from PCIe slot, 2x6-pin for 150W]. But this 2x6-pin is not final, since reference boards feature room for a 300W TDP configuration [75W from PCIe, 8+6-pin for 150+75W], for the ultra-overclocking boards.

However, our sources in Taiwan claim that the ultra-overclocked board e.g. SuperRV790 isn't exactly what they are interested in. AMD GPG [Graphics Products Group, e.g. division F.K.A. ATI] recognized the need for even more powerful part, and gave the thumbs up to partners that want to do the 4890X2.

http://www.brightsideofnews.com/news...hd4890-x2.aspx