http://educations.newegg.com/tool/psucalc/index.html
http://educations.newegg.com/tool/psucalc/index.html
that PSU above should be enough, but if not-there is more of 80 PLUS Certified
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371007
i, personally, turn off all...