It's doubtful many P750 owners will actually use antialiasing in games, but here's what the card's supersampled and fragment antialiasing modes look like. Click on the images for an uncompressed PNG version of each screenshot.
Millennium P750: No antialiasing
Millennium P750: 4x antialiasing
Millennium P750: 16x antialiasing
The P750's 16X fragment antialiasing produces incredibly sharp edges with nary a ragged edge in sight. However, fragment antialiasing only works on edges, so textures look better with the card's supersampled 4X antialiasing.