That's a great link to figure out a rough idea of how much power your rig will use. It doesn't have the 670 on the list, but the GTX680 has roughly the same power consumption (a bit more, but gives you a rough idea).
Yup! [off topic] Though I must thank you for that thermaltake link, I've been looking for that for AGES but I couldn't find it (probably due to laziness and wrong way of searching). I get curious on how much power some of my rigs consume at times - not just a recommended PSU