Originally Posted by: guitarist101Both are technically correct as a "power chord" (which, technically, isn't a chord... since it's neither major nor minor, and does consist of three *different* notes - a G power chord can be played with both a G major and minor. Anyway, adding the octave note in the "power chord" creates a *bigger* sound than just using the dyadic power chord.
Right, but it's not a different note. In the case of the G power chord, it's two G notes and a D, thus not a triad (I'm just being nitpicky, don't worry about me).