On the topic of processing power, Project Cafe is rumoured to have a GPU based on the R700 which was the family of chipsets that produced the Radeon HD 4XXX series of graphics cards. It will most likely be highly modified and it is reasonable to expect it to have 4 to 8 times the real world processing power of either the XBox 360 or PS3's GPUs.
While this performance increase could easily disappear if Nintendo focuses on pushing 1080p games at 30fps, with Nintendo's history I anticipate that Nintendo will focus on 720p; and a GPU like the one in the Radeon HD 4850/4870 is close to pushing the limits of what we can render using the raster-scanline algorithm at 720p.







