First a little basic info:
I started by setting "Optimal Settings" to reset my cfg then adjusted the graphics settings in-game. I quit and relaunched CoD between each benchmark, and rebooted between each BIOS setting change. I used the latest CCC available (9.11) as of this post and all of my other drivers are up to date as well. I tested Game Booster 1.3 once here, but it seems to be less effective than 1.2 since it no longer reduces Windows 7 to "Basic" color scheme.
Here's the setting...