function said:Given the similar timescales involved, has anyone considered the possibility that this could be the same GPU (or variant of) that MS chose not to use for Xenon (for either licencing or technical reasons)?
Doubtful. If NVidia has been working with Sony on this for the past 2 years, I doubt they showed anything of it to Microsoft during any potential Xbox2 negotiations.
NVidia was also being less than enthusiastic about any potential Xbox2 business, for a good bit before MS tapped ATi as their partner.
I'd say Microsoft pretty much closed the door on NVidia due to licensing/cost issues with the original Xbox's GPU, rather than for technical reasons.