It truly does not matter. It is the new chipset they have in AMD's roadmap, since the old fab is being phased out in foundries. Plays the same software, etc.. The OG PS4 will eventually be phased out more than likely when prices come down enough to lower the new machine in the same range.
Or if they stick with the lesser SKU, it will use chips that have bad CU's disabled and can't pass for use in the 4K model.
If they are profiting from day one, as expected, then this just continues to be PS4 ecosystem sales effectively.
PSA: You know, I just came off a ban for being 'passive aggressive', just an FYI, junior bans are permanent.