There were rumors in the past concerning Samsung placing a quad-core processor in the Galaxy Note 10.1 and Galaxy Tab 2 10.1, although Samsung did step forward to deny that such an upgrade is in the pipepline for the Galaxy Tab 2 10.1, but nothing official from the horse's mouth concerning the unreleased Galaxy Note 10.1 states otherwise. Check out a recently submitted NenaMark result above – the Mali-400 MP GPU on this particular version of the Galaxy Note 10.1 does post a better score compared to the test unit.
Ubergizmo, Samsung Galaxy Note 10.1 GPU benchmark shows improved results