V-RAY: GI Helps with Noise

While following this tutorial:
http://www.vray.com/vray_for_3ds_max/tutorials/rendering_an_interior_scene_tutorial.shtml#Part_I:_Adjusting_the_GI_settings

I did a few tests on a current project I'm working on, and GI on default settings help smooth out the image in terms of noise.