Oh, yeah. If you're gonna use a GTX460, get 400W+. Maybe a 380W if you're either not overclocking or running a low power CPU. But, if you're using a good discrete GPU like a 460 or higher, buying into Llano is a mistake. The point of Llano is either, no discrete GPU or Hybrid crossfire with like a 6550D which is very low power. Llano's APU is basically the cheapest gaming solution right now simply because you don't need a discrete card.
I never had a problem with the a Llano suggestion. My point is unless your playing something ancient like counter strike you'll need better. And better is cheap but will require a better psu which is still cheap so I don't even get why there is a argument other then the sake to argue.
Besides half of what newegg offers for 300w is oem junk. The other half is so cheap if your cutting it that close I'd suggest that person save their money.