I would not buy that Raidmax because it is sh*t and it is not gold at all... also I saw a couple of them caught on fire... I would recommend this one http://www.newegg.com/Product/Product.aspx?Item=N82E16817104142
excellent power supply with long cables and very quiet, i used couple of these on my gpu rigs and now two of them are in antminer s2... so choice is yours but do not try to save money on PSU because down the road you are only have problems...