You don't need that big a PSU for that system, and unless you are doing something really weird you can probably even run this thing on stock coolers (albeit it would run hotter than if you used the aftermarket CPU cooler). I'm also kind of wondering why you would go for Nvidia if your aim is to be running the thing 4-5 years hence without much maintenance efforts. (You get more and more serious random [driver related] nonsense with Nvidia than you get with ATI, or at least that has been my subjective experience.) I guess it is worth pointing out that if you are not in love with the Raptor or something, you can get an SSD + data driver for similar price but better day to day performance (mainly because SSD's are much better at random read/writes as they do not need to seek all over the disk).