Let me start by saying that I'm biased so you guys should probably take this with a few grains of salt....
I have heard that recent Intel APU's actually do have decent graphics cores.... But I think that -must- be relative to what they used to make.... It is my experience that they are incapable of producing decent graphics cores. Of course I come from a workstation background at a dell only shop and found out the hard way that Intel graphics arent even adequate to run a 2d desktop. I'm talking about waiting up to 30 seconds just for windows to draw. I just can't picture anything they produce being capable of any kind of 3d rendering...... Even if it has the capability I doubt very much it has the performance.
I'd bet my next 2 paychecks that Intel's CPU is faster at 3d rendering than there GPU.