What Coolermaster PSU do you have? They have a pretty wide range of some ok components to very cheap components. Keep in mind that a 4670k and 7970 are probably not going to use more than about 360 watts at it's peak and will quite regularly be about 340 watts or so, which means a half decent quality 600 watt supply should have plenty of room for that gear.
If you can't find the model of it, at least give the amp ratings on the 3.3, 5, and any +12v numbers on the sticker that's on the side.