MMF2 won't utilize all available CPU

[Sphax]

maybe one day we'll see another rendering mode like Direct3D which will take all advantages of graphics cards.

[MrKsoft]

Yeah, but until then... what do we do?

[EnigmaWave]

I think your CPU might have either dual cores or hyper-threading.
A single threaded application can only run on one virtual CPU at a time, so 100% usage on one virtual CPU + 0% usage on the other virtual CPU / two virtual CPUs = 50% total CPU usage.

Reference:
http://blogs.msdn.com/oldnewthing/archive/2006/10/30/903346.aspx
http://discussion.autodesk.com/thread.jspa?threadID=427860

[MrKsoft]

I think you might be right. This processor supports hyper threading... I guess it might be on. =P

Well, my game is performing somewhat well, so I think that's all I need to know.