looks like 8+1 phase
The pictures of the test sample looks like it has way more than 8+1 phase power. More like 12+2 or something. Hard to tell. The skewed picture melting off to blurry focus makes my brain hurt.
The front-side rendering doesn't match the back side test sample pictures; not even close. Different memory chip layout and different power layout.
I would take both with a grain of salt at this point.