Project Natal drops hardware Motion detection to save costs!

[NJ5]

JaggedSac said:

NJ5 said:
10-15% of 360's CPU = almost half a core just for the motion processing.

Unless they meant 10-15% of one core. But that's not what the wording of the article seems to imply.

Sounds like they mean total processing power to me.  So one of the dedicated threads will be using most of a core for around 10ms each frame.

I gave them some leeway since total processing power would also include the GPU... it's not a very precise statement, but I agree with your interpretation.