On point 1, Yes it does.
On point 2, Yes it does.
On point 3, The screen captures in both instances came back displaying the GUI perfectly.
On point 4, The VRAM is soldered directly to the card. I can provide a picture of the card, but I am unsure which chips represent the VRAM.
1 other thing I noticed, during a subsequent boot one of the icons from the init parade displayed itself in the upper center of the screen (along with all sorts of other strange patterns.) In addition to the placement, the image was drawn as black and white. It appears that the card is not displaying color as well.