Saddly you don't add up the amps like that on a multi-rail. It probably has only 33 to 35Amp
Take a look at the psu Muffin posted. 400W and 30A. Thats 130W less than the raidmax, but only about 4 to 5A of actually Amps.
Also look at the efficiency.. All the ones, but the fsp, are 70%, whereas the fsp and antec are 80%. Thats your power bill.
Muffins a very good choice and the best so far, I'd add the antec 430 green. Its a 80% Bronze, so bout 85% but has no wall cord... greener that way, just use the old one. But its the same as the NEO.
Newegg.com - Antec EarthWatts Green EA-430D Green 430W Continuous power ATX12V v2.3 / EPS 12V 80 PLUS BRONZE Certified Active PFC Power Supply