There is a very interesting article on G80/G92 hardware architecture just published by NVIDIA guys (hardware architects) in the March/April edition of IEEE Micro:

    Erik Lindholm, NVIDIA
    John Nickolls, NVIDIA
    Stuart Oberman, NVIDIA
    John Montrym, NVIDIA

The full article can be downloaded here: http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=4523358

Most of the informations can be found or deduced from the CUDA manual but there is also few details about hardware model in this article that was not given before as directly by NVIDIA. Especially, there is mention of Fragments grouped into 2x2 to be scheduled into Warps, a thing we deduced with our G80 hardware analysis (http://www.icare3d.org/GPU/CN08).There is also the firstpicture of the G80 die publicly avalable (hum ok, not very clear and in grayscale) !

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