the 9800gtx+ is a 55nm part. end of story...I think your title is a bit off (I think) 9800GTX+ = 738 core / 2200. I wasn't under the impression that the + was a firm indicator that you were going to get a 55nm CPU, atleast not according to nvidia's wording, the 55nm parts are coming out, but just because it has the + on it doesn't mean specifically 55nm, because 65nm g92's can easily clock to that as well. That was my impression anyways.
4870X2 paper launch?