Four more NVIDIA GT300 variants tip up
 

Yes, the oft-delayed monster is going to have children, four of them. For the sharp-eyed, this is more than Nvidia has done at any time in the past. While none of them have taped out yet, our moles say that Nvidia usually waits until they get the first silicon back to see if there are any changes that need to be made to subsequent designs. With mask sets running into the 7 figures, this is what you call a smart move.

So, to reiterate, GT300 is going to be a huge die, ~23mm*23mm, half way between GT200 and GT200b. With TSMC 40nm wafers running ~30% more than 55nm wafers, this puts the cost of GT300 dies at about ((530/484) * 1.3 = 1.42x GT200. If you take yield into account, that cost will be much higher. We shall see.

http://www.semiaccurate.com/2009/08/...-variants-tip/