We've learned that Nvidia might be ready with its 55nm version of GT200 sooner than we expected. GT200 55nm might come out weeks after Radeon HD 4870 X2 aka R700 dual chip card.
Nvidia taped out the 55nm GT200 a few months back and we believe
that launching 65nm version first made more financial sense for them as they
wanted to probe the market and see if ATI actually has a decent chip to
compare.
We don’t have any fixed dates but the GT200 55nm might show up
very soon. GT200 with some higher clock and especially higher Shader clock could
easily give much more performance compared to a standard 65nm GT200. Let's wait
and see.