Ati only has/had two design teams (marlborough / silicon valley. one team kept developing the R300 base (R350, R420/80, R520/80) and one team worked on R400 (R500, xenos, R600)
According to Dave Orton they had/have 3 development teams. Marborough, Silicon Valley, Orlando. Quote from the interview at B3D with Dave Orton in 2004:
Source: http://beyond3d.com/content/interviews/8/3If you dissect in, for example, to the R600 product, with is our next, next generation, that development team is all three sites - Orlando, Silicon Valley, Marlborough – but the architectural centre team is in the Valley, as you point out, but all three are part of that organisation.
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Bob Drebin in the Valley is in charge of the architecture team and so he’s in charge of the development of all the subsequent architectures but he goes out to the other teams key leaders and that forms the basis of the unified architectural team. At an implementation level, you’re right – Marlborough is mainly focused on the “special projects” and that will probably be another 18 to 24 months for them. So the R600 family will mainly be centred primarily in the Valley and Orlando with a little bit from Marlborough, and then the R800 would be more unified.