Hi, as the title says, I want to be able to know if the CX 430W power supply is good enough to run these parts. I'm unsure about the GTX 660.
yes it will be fine
Nvidia recommends 450W, but it doesn't look like you have very many other power-hungry components, so I think you'd be fine. If you're really concerned, just go with something 500+ W.
Just my 0.02