Xbox One Dev: GDDR5 Is Uncomfortable [...] ESRAM Provides High Bandwidth At Low Power Read

[Badassbab]

What MS mean by balance is the balance between games, apps, tv, Kinect and price. If they had loads of GDDR5 plus a better GPU and still included Kinect which seems to be a core focus for them then the price would have been in the plus £500 range.