Onibaka on 22 October 2010
What I think that Sony should do is if possible make a PS4 with a powerful CPU but a Med-End GPU. Then if you want you will be able to buy and connect a PS3 official GPU in a external port. They could make a PCI- like external port for this GPU.
This should keep PS4 in lower price range, but if you are hardcore you can have awesome graphics too.
But only if Sony finds a solution for Developers to don't have almost any extra work. It's not impossible.
Maybe this external GPU could be a replica of the internal one, to make a dual-gpu system.
