I think we all realize now that the LAST thing Apple could afford to do with the design of the iPad 3 was increase power consumption further. They've already stuffed a huge battery in there which takes nearly twice as long to charge, adds weight, and even makes the back a little warm. This is all to power that display and LTE radio. Adding a quad core would have made it worse. And of course obviously it's an issue of profit margin too. And the dual core is still nice and fast on the iPad 3. But now that I've had a solid day with this thing, I realize that Apple rode the ragged edge on acceptable power consumption to make this design work. Not that I mind, the retina display is oh so worth it.