In Call of Duty 2 the Intel chipset did about 10-20FPS better than the AMD chipset. But they also say that the demonstration may not have been fair:
But the AMD system used an Athlon 64 X2 5200+, while the Intel system was running a Core 2 Duo E6600. Considering that the Core 2 Duo's are quite a bit faster than the Athlon X2's, this doesn't seem like quite a fair comparison.
However, neither integrated graphics solution could actually play the game at a playable frame rate, although we're not sure what resolution the game was played at, but the 690G topped out at around 10 FPS and stayed there, while the GMA X3500 never went over 30 FPS and averaged around 20 FPS.