The 4670 is a great choice, but I was unable to find hard data on power supply recommendations. However I saw a review of the 4670 that was run with a raptor and quad core and maxed out at 270 watts. The general consensus I saw on forums is that 350 watts should be good. Doesn't need a pci-e power from the power supply, runs on mobo power.
Thanks for the input. I found a very well done article on Anand Tech or something like that. Analyzed a basic mid level and high end computer re power supply needs. For the mid level it is
Graphic Card varies but I would guess 120W
Drives 10 - 20W ea
Memory 5w per stick
I think this is about it. would be in the range of 250W max idle at about half that.
Ultra PSU's aren't the best in quality, so I'd recommend getting a PSU upgrade to keep things safe. I'd recommend the e5200 (2.5gHz) CPU for $83 and use the ~$40 savings and invest that in a new/more reliable PSU. I'd stick with your 4670 GPU selection, because it doesn't cosume much power and doesn't need a 6 pin PCI-e power connector!!
$41 shipped!! Has 29A on the 12v rails and 1 x 6pin PCI-e power connector, if you decide to get a mainstream GPU later.
Here's a PSU that I'd recommend for ~$40: SILVERSTONE ST400 400W ATX 12V 2.2 Power Supply - Retail Review of the Silverstone st400w PSU