667gb might seem low but with many games being significantly less GB on PS5,than on X.I will say its about the same if not better.If that your concern go get a Ps5 A.s.a.p and with it get demon souls...and use earphones.And prepare to be blown away literally...As for storage,not long from now Sony will release the firm for the internal SSD,and you will be able to get one if you feel that storage is too low.