PS4 early specs 'more powerful' than Xbox 720, claims source

[TGO]

We have to remember the performance boost those cards will get from just being in a console too, but yeah a more newer card would be better & may come about, those are probably what's available at the time & maybe replaced in final hardware, not to mention any modification done, ram & clock speeds maybe different which is usually the case with PCbase hardware in consoles.