Michael says in the article that the mGPU was PCI-E, which matches what my old Inspiron 6000 had as well (128MB x300 PCI-E). That being said, if it was missing Hi-Z and any other off-by-default optimizations, that would explain part of the performance shortfall.
Of course it's also possible that there's room for improvement in the shader compiler, state trackers, drm/kernel-level, and TGSI to hardware back-end.



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When adding optimizations, I was mainly testing R500 with PCIe, where most of the user base is. Not sure if anybody else was trying to optimize for AGP...
Or is this like inception, where I didn't get your sarcasm?!