I think you will need better than that. I put in a PC with those specs and average supporting components (2 x DIMMs, 1 x SATA HDD, DVD-RW, 2 x 120mm Fan) into the calculator here. Allowing for some capacitor ageing (20%), the minimum allowable PSU came out at 495w. Personally, I'd go for a high quality 650w or higher PSU. Look higher if you intend to overclock as that really ramps up power use.
I don't know much about the Aerocool brand for PSU's. If you are in the US, this Corsair HX650 is on offer at the moment at Newegg which is a nice deal. For a higher performance PC I would tend to look for PSU's that have been well reviewed or are made by one of the better OEM's like Seasonic or Superflower.
Edited by jonuk76, 21 November 2014 - 12:17 PM.