This chip will work on tablets, so I am not sure about the 20-40% of the pixels thing. Also PS3 games look much better than the PC counterparts on similar hardware thanks to the fine-tuning and specific optimisations which are possible only on fixed hardware. In order to match the PS3 the Mali GPU actually has to be more powerfull. And let's not forget that the power consumption will be orders of magnitude lower. It definatelly will not be high-end, but might still be more powerfull than most of the GPU's that will be sold at the time of the release (e.g. integrated Intel crap).