Check to see if it has any VSYNC settings in your Q3. Turn it off. If it doesnt have the setting you need to change it on your display settings.
START> SETTINGS> CONTOL PANEL> DISPLAY> SETTINGS> ADVANCED> 3D> Click on OPENGL > Click on Use Custom settings > then CUSTOM > turn the slider down on "wait for Vertical Sync" to always off.
If you want to do this on any Direct3d games just click Direct3d and switch the setting just like you did for OPEN GL.
INTEL i7 930
3x2gb Corsair Dominators
EVGA GTX 480