Where is the global git config data stored?

When using git config --global to set things up, to which file will it write?

Example:

git config --global core.editor "blah"

I can't find it at these places:

C:\Program Files\Git\etc\gitconfigC:\myapp\.git\config

I have not set an ENV?

My Git version: 1.6.5.1.1367.gcd48 –on Windows 7