The P750's pixel shader performance is about what we would expect. The card isn't quite as fast as Parhelia, suggesting, perhaps, slightly lower core and memory clock speeds. Interestingly enough, the Millennium P750 actually beats the GeForce FX 5200 in the advanced pixel shader test.
The Millennium P750 is at the back of the pack in the ChameleonMark pixel shader tests. Since the G550 lacks pixel shaders, it wouldn't run any of our pixel shader tests.