I thought I'd pop in here and mention that I've tested this on my A10-7850k APU with no video card. I switched to this setup because I was tired of the instability in every graphics card I had. Graphics seems to be quite solid at 1920x1080, not the best framerate, but absolutely playable. I'm surprised at how stable this seems already. I've only played for a couple hours, but by this point on the released version of E:WoM I was getting at least 2 crashes.
Only one small issue. Windows 7 seems to misreport the amount of graphics memory available. I had it on Auto at first, and it said I had less than 512mb. I put it to 1024mb, and dxdiag said I only had 170mb. I finally settled on putting it at 512mb, and it didn't complain. DXDiag says I have 4gig of video ram though. It appears to be a known DX problem on Windows 7. http://support.microsoft.com/kb/2026022 So, the only problem I've encountered, and it's MS and not Stardock. Excellent.
Look forward to playing this further.