Where did you get a 2TB drive for $90? That's dirt cheap!
Just off Amazon, it's not a SSD or anything. Also just 5400 RPM, though that is what comes default in the PS4, suppose I could have went for 7200.
This one, which you have to remove from the enclosure. If you note the Amazon reviews some talk about using it for their PS4.http://www.amazon.com/gp/product/B00ILALU9G/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
I'll let you know how it goes once I get it.
From what I've read, go with 5400. 7200 produces too much heat for that little box.