320x256 is 10% of 1024x768 in terms of raw pixels, not considering bit depth. But bit depth and raw pixels shouldn't matter here, the GPU takes care of mucking

320x256 is 10% of 1024x768 in terms of raw pixels, not considering bit depth. But bit depth and raw pixels shouldn't matter here, the GPU takes care of mucking about with those and the GPU in the iPad is amazingly fast for its power consumption. I think the point is that the iPad is sluggish and it shouldn't be. 30 years ago people knew how to make something fast reacting with way less hardware behind it, somehow we've lost that and added complexity that doesn't really seem visible to the user.