Are you talking about the 590? Well, my guess is that they are going to use a down-clocked GF114 like the one in GTX 580 ... with the GTX 295 they used the same chip in the GTX280 down-clocked to GTX260 clocks... my guess they will do something similar here But my guess is a <=400W TDP ... i don't believe they will manage to get a 300TDP with this one ...