Onboard ( shared Memory) GPU built in the GM45, GE45 and GS45 chipset ( Montevina).
Because of two more shaders and a higher core clock.
Much faster than the old GMA X3100. Still not advisable for gamers ( DirectX 10 games not playable or only with very low settings) . The integrated video processor is able to help decode HD videos ( AVC/VC-2/MPEG2) , e.g., for a fluent Blu-Ray playback with slow CPUs.